Comments by OriginalGriff (Top 200 by date)

Seriously, it'll take you under five minutes to check what I suggested - and it will prove something, one way or another.
DGV's don't just "lose all their columns" - if they did, someone would have noticed in the last 20 years and we wouldn't use them! Which means : it's the wrong DGV, you cleared the columns elsewhere, or you didn't add the columns.
We can't fix that: we can't run your code, let alone search it!

"Clues? I don't need no stinking clues! You have to think to work them out and that's your job!" :sigh:

I wish these people would learn the language before they copy'n'paste'n'hope ... :sigh:

That's what Using does: it says to the system "when this variable goes out of scope, Dispose it automatically" - it doesn't matter how it goes out of scope - end of a block or method, or an exception, or a Finally block - as soon as it's no longer needed, it is thrown away and can't be accessed.

If you want to pass it back to the calling method, remove the "using" and Dispose it manually yourself when you are finished with it.

Or you haven't included it's containing class in your Using statements ... you could use it's full name: https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.datavisualization.charting.axisenabled?view=netframework-4.8.1

Please don't post messages like this as a solution - it isn't and that can lead you to be seen as a "rep point hunter" or even a troll / spammer which will lead to you being thrown off the site. There is a "have a question or comment" facility for getting better info.

It's also pretty much impossible for me to work out what your message actually means - it isn't at all clear which may be related to your English knowledge being a bit too low for technical queries. I'd suggest that you might want to consider writing your query in your native language, then using Google Translate to get an English version. That way, more people will understand you and your chances of help are a lot better.

Would you like me to delete this "solution" so you don't get seen as a troll? If so, use the "Reply" button above this message and I'll be glad to.

Still wouldn't be reliably Disposed - the GC ain't that quick to chime in! :laugh:

Read the question assignment again: it's pretty explicit about what you should do, and it's not what you are doing at the moment!

Step one: create a new, empty array with one element less than your current one.
You know how to create an array, so what is the problem with doing this yourself?

:D

Don't give up on it, use the debugger to find out why it's happening!
Look at what is in the string you pass to Newtonsoft, look at where the exception happens. This is a tiny piece of code, so learning to debug on it is fairly easy (even if it looks really difficult from your current position.)

My guess is that you are editing the wrong use.json file - so changes you make aren't reflected in the app when it runs - and since you are using the current directory to access it that's entirely feasible. The debugger can tell you exactly what was in the file, so use it to find out.
This isn't difficult; you have the tools you need - just not the "mental attitude" to look at the problem yet, and until you do develop that skill you are going to come across similar "unsolvable" problems in every project you try!

"t's easy to solve exception for you, but I'm not. lol.
can you know me code to solve this exception?"
No, I can't - the exception happens because of something you aren't telling us: if I copy your code as modified below:

            StreamReader r = new StreamReader(@"D:\Temp\user.json");
            string sc = r.ReadToEnd();
            List<Employee> employees = JsonConvert.DeserializeObject<List<Employee>>(sc);

and create a user.json file containing the JSON as modified by me originally, it runs without an exception: I get a collection of four Employee instances as I would expect, and the debugger shows me that it all worked fine.

Now, I can't believe that you can't cope with editing your code, so my guess - and that's all it can be without access to your files - is that you are picking up the wrong file, editing the wrong file, or doing something else in code that I can't see.

So no, I can't tell you "do this" and it'll be fixed - it needs you to know what you are doing and without meaning to be cruel or nasty you aren't showing any signs of that at the moment!

"Why everybody always say that it is easy so you study yourself? lol."
Because if you study it properly, it really is - but that doesn't mean "guess and hope it's right" or "find the code on the internet and hope that works"! It means following a course, or getting a book and reading it cover to cover, plus doing the exercises to make sure it "goes into your brain" correctly.

"Can you teach me next monday if I can't solve this exception?"

:laugh:
No - partly because I'm not a teacher, partly because I can't see when your eyes start to glaze over, partly because I have a lot to do in order to get paid (this site is all volunteers), but mostly because those books I mentioned tend to run well over a thousand pages and even I can't read that fast! :D

Come on man, this is basic stuff. If you can't work out "Oh, I need a loop" and "I'll use a ??? loop" for yourself, then you have very, very little chance of getting your project off the ground at all - and what you do produce will be horrendous: bloated, unreliable, hard to maintain, and very, very prone to you getting fined.

Shelve this - back it up somewhere so you can look at it later - and go back to the beginning with a course or a book and learn the basics properly before starting again. Then in six months time, drag out this project and squirm in horror at the monstrosity you were bolting together so hopefully ... :laugh:

Have you ever heard of loops?

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

Well, there are several things wrong with it, but as far as "processing JSON" goes they are not relevant: the file is stored in the wrong place so it will fail in production, the passwords are in clear text so you will get MASSIVE fines from the EU because you ignored GDPR, and your naming conventions are a poor choice.

The code itself won't work (provided you edited the JSON correctly, but I can't access your HDD to tell that! :D ) because:
1)An Employee is not the same as an employee - C# is case sensitive!
2) You aren't deserializing a single Employee instance, you are reading a collection of Employees - so you need to tell NewtonSoft that:

List<Employee> employees = JsonConvert.DeserializeObject<List<Employee>>(sc);

Spring chicken! I'm a '59er. :D
Get a course (best way because if you don't understand you can ask the teacher to rephrase), or a PHP Book (next best because it structured and should cover everything) but avoid "learn it for myself" (because you can't learn what you don't know even exists), and Youtube (because most tutorials there are produced for likes'n'subscribes (i.e. money) by people who can't teach, have no idea how to make a video, and more often than not can't code either.

It does get harder to learn as you age, but it also helps keep your mind flexible, and "young".

But ... but ... they all come from ChatGPT so they *must* work together! :laugh:

"problem is also that i hack together blocks example codes"
That's your problem! You can't just grab random code and throw it together, bash it around with a hammer to get it to fit a bit and expect it to "just work". That's never going to happen: each bit of code you sticky tape into you app expects the rest of the code around it to be working "this way" while the bit of code you glued in next to it demands "that way"! :laugh:

It's like needing a tire for your car and just grabbing the nearest wheel and shoving that on instead. You end up with a moped wheel and a Ferrari on the front and a Ford and a tractor on the back - and that just won't go in a straight line, much less round corners!

You need to learn the language, learn the framework it';s going to run under, and write code to fit your needs. Yes, there is a time and a place for "internet code" but it's never going to work if your whole app is thrown together from bits and pieces. I use code - but as "proven working" black box assemblies where I can use classes and call methods to do specific things without having to "know" how they work internally. But I have to write a lot of "glue code" to interface them with my code.

This is not a solution, or even close.
And posting this to an old question looks like "rep point hunting" which we class a site abuse and for which you would be banned from the site.
I won't start that process this time, but consider yourself warned. Stick to actual answers to new questions and you'll be fine. Post garbage to old questions again and ... it'll be time for the Ban Hammer.

Answer updated.

Very few people here will go anywhere near link shorteners: we have no idea what is on the other end. Making a link to it bold doesn't change that.

You want to show us an error message? Copy'n'paste the text into your question.

Don't post this as a solution - use the "Have a question or comment" button to speak to the OP instead.

Posting this as a solution can look like rep point hunting, which will get you kicked off the site.

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

And?
What does it do that you didn't expect, or not do that you did?
What have you tried to do to find out why?
Are there any error messages, and if so, where and when? What did you do to make them happen?

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with.
Use the "Improve question" widget to edit your question and provide better information.

Without access to your code, we have no idea how to help you - we just don't know what you have tried!

So edit your question, and show us the relevant code fragments - server side and client - and explain what you have tried to find out why it isn't doing what you expect - plus what it actually does do instead. Don;t forget to tell us how you found out what it was doing.
Just saying "it don't work" helps no one!

Use the "Improve question" widget to edit your question and provide better information.

This is an English language site, and we can only accept and answer questions in that language.
I have run this through Google Translate to produce a probably-good version, but you should check it and make sure it does say what you are actually asking.

And in addition, there are two things wrong with the "question":
1) This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

2) Dumping your whole code on us and basically saying "fix it" is rude, especially when it is not written in English - we have no idea what function is supposed to do what, and cannot work it out easily without repeated uses of Google translate.

So show us the relevant fragments only - help us to help you!

Do you want to try explaining that in rather more detail? Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.

And? What's the problem?

No, you can use "open with" with unregistered extensions, and even register the extension by selecting "Always" instead of "Just once".

It's probably the heat - it's getting pretty warm here today.

If you are using this in a multiuser situation, then Access (or any other non-server based DB Engine) is going to give problems: lots of them that are a real PITA to work round.
There is a free edition of SQL Server which for a small app would probably never hits it's limitations:
https://www.microsoft.com/en-us/sql-server/sql-server-downloads#:~:text=Express,web%2C%20and%20small%20server%20applications.
You would want two copies: one for dev and one for prod on separate machines - never try to develop against the production DB! :D

You're welcome!

Likewise - I use SqLite for single user DB's and SQL Server for multiuser.

The only reason I don't suggest that is that it's too easy to forget to update that when you add or change an SP for example.

What part of "we have no access to your code while it is running" did you not understand?

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

This is an English language site, and we can only accept and answer questions in that language.
I have run this through Google Translate to produce a probably-good version, but you should check it and make sure it does say what you are actually asking.

He cant even help himself, much less anybody else ... :D

I try really hard not to look at names, but at the question - to avoid any unconscious bias I may have. But in this case, it's worth looking ... :sigh:

Just so you know: it's our resident Nosferatu-level help vampire again.

You're welcome!

Just so you know in future ... don't post comments like this as solutions - if you use the "Have a Question or Comment?" button instead, then an email is sent to the person you are talking to (just as this sent one to you). If you post as a solution, the only person who could get a notification is you!

You're welcome!

At the moment, your list of products is an instance member of the Product class - which means that each Product has it's own, separate list. You don't want that, unless that list is meant to contain the sub-assemblies that make up a Product (like a mains lead, a manual, packing peanuts, and a box for example).

If New_Products is meant to contain a number of Products that aren't related to each other then either that needs to be created outside the class, or it needs to be Shared and the class needs to add and remove items from it automatically as they are created and destroyed. (The second option is the advanced version and adds a fair degree of complexity to the whole system - as a beginner, I'd suggest that the Product class shouldn't know about the collection at all so put it in your form class or similar.)

"I want to make sure the status is true in both the rows."
Hence a "two row per ID" solution :D

Probably, yes. If the device expects English and you send it a question in Gujarati it's not going to reply with the solution! :laugh:

So go back to Hyperterminal or similar and send a message that does get a response. Then think about what the difference between that and your data above.

I can't say "do this" and fix it: I have no idea what you are talking to or what it expects to recieve.

"Bytes to Write is 0 and Bytes to Read it shows zero" - that doesn't mean it hasn't sent any data - if write count is zero then it's sent all it's data out.
Read count being zero also doesn't mean anything on it's own - it means the remote device didn't reply to what you sent - and that could be becuase data flow control lines aren't set so it's not talking, or it is waiting for a full command.
What you are sending is
: ETB D D D NUL SYN §
Which looks a little odd but may make sense to the remote device - I have no idea what it is or what it expects. Check the documentation for what the device expects exactly.

How do you know it doesn't write anything? What is telling you that?

So you haven't tried to check communications work at all, just that "a com port exists and it's probably got the device I want to talk to on the other end"?

As I said to start with, check the comms work first, then start looking at code. Until you have proved that comms happen at all, you don't know that the device works, is turned on, can listen to you, can respond because you haven't got any way to establish that data leaves your PC, let alone that your code is working as expected!

Are you being deliberately obtuse here?
Do I have to spell this out in words of one sylable?

OR together Keys.Control and Keys.C to form one side of the comparison with your keycode. If they match then the CTRL key is held down, and C has been pressed because binary OR sets bits if they are 1 in either or both or the two operands.

Seriously dude, you need to learn the basics before you get to "real stuff" or you will waste huge amounts of time guessing and hoping it works. Just like this: three hours and counting!

Read what I said: "You need Keys.Control | Keys.C in order to match both"
& is a binary AND operator: it only has 1 bits in locations where they are 1 in BOTH operands.

This is basic stuff - you should know all this long before you get to GUI code!

How do you know it's the right port and configuration, and how are you checking if anything is written? What did HyperTerminal (or similar) show?

So what does the debugger show you is happening?

Hey, one problem at a time ... :D

It's in a using block, so the whole command will be Disposed when finished with, which will Dispose the parameters etc.

Clearly, you didn't make "just one change" - you may have accidentally deleted (or added) more than you think. JSON data is good, but it's vulnerable to "manual change" errors - it's very easy to mess us the whole file with a trivial change!

Don't do that. Add the path to your project headers files to the project settings as I said in my reply.
If you go down your route, then the next project you create will generate it's own globals.h file which you will need to overwrite this projects with - so this project will then fail to build when you need to make changes later.

Oh, come on! You are joking, right?
https://www.google.com/search?q=microsoft+tech+support+vscode&oq=microsoft+tech+support+vscode&aqs=chrome..69i57j33i160i395j33i395i671.7144j1j7&sourceid=chrome&ie=UTF-8

So look at the code that you use for restarting it ...

Why are you using ".Add"? "+" is much clearer and easier to read ...

You are kidding, right?
You *really* can't write a trivial line of code on your own?

Label3.Text = result.ToString()

* Sorry about that - the cat walked on the mouse and sent it.

You're welcome - but quite what you mean by "lost the persistent rectangle ability" I am not sure.
Were you drawing your rectangles on the Image behind the PictureBox? Because if you were that would make the rectangles really difficult to move later!
Instead, draw the rectangles from the List onto the PictureBox itself as part of it's Paint event. That way they are easy to move and visually persistent.

And?
What does it do that you didn't expect, or not do that you did?
What have you tried to do to find out why?
Are there any error messages, and if so, where and when? What did you do to make them happen?

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with.
Use the "Improve question" widget to edit your question and provide better information.

Start with the documentation - but if you don't know how to use lists then you probably want to learn some more before you go any further with this project. If you don't, you are probably going to be both confused and frustrated very quickly!

I really should start checking names before answering things ... :doh:
I remember this one: memory shorter than a goldfish, and no idea how to write any code whatsoever. Or too lazy to bother, whichever.

That's because it's not a solution, it's a way of you finding out what the problem actually is!
You need to look at what the process is saying when you try to execute it - it could be saying "I can't find a D: drive", or "I don't understand that parameter", or "No such file", or "Permissions problem write the file", or anything at all.
And until you know *what* it is saying nobody can fix it!

Answer updated.

Check the DB you created has the same types.

You're welcome!

Only you can answer that - I have no idea what that else is supposed to be connected to! You wrote the code, you understand it - and only you have any idea what you intended when you wrote it! :laugh:

You forgot to add the 25% "contingency" for unexpected problems. :D

No, the interrupts I means are hardware signals that cause code to run when they change: Interrupt - Wikipedia[^]

Probably not: the check itself takes an unnoticeable amount of time in human terms, and each delay is a second - think about how long it takes you to "press a button" and you'd see what I mean.

What you probably need to do is change the whole way you do things: I have no idea if you have interrupts on that board or how you tie C code to them, but if you do and can, then I'd set up a state machine to decide what to do next and let timer and button interrupts change the state.

Yeah - and we know none of that, and have no way to see it in order to make an estimate, even a rough one.

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

Answer updated

I had never heard of those: I can see why from the example on the page - I may start using them.

:sigh:

You don't group by everything: you use group by to get the groups and the aggregate values - you then JOIN those back to the rest of the data you need.

See here: SQL GROUP By and the "Column 'name' is invalid in the select list because..." error[^] - it explains the basics.

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

This doesn't make a lot of sense: I can't work out where the figures in the example come from: if it's "balance - credit" then "Active 3000" is right, but that doesn't work for "Bank 5000" or "Storage 3000"
And if it's the sum of the balances for the tree values then "Storage 3000" should be "Storage 2000" or "Storage 4000".

Please either correct your example, or explain in better detail how it's calculated!

And show us the query you tried, what it generated, and what you expected it to generate.

Use the "Improve question" widget to add better info, please.

"I wanted to know what exactly was wrong in my solutions"
Rather than going into full "code review mode" on your solution, I'd just say park this code somewhere (Zip it up and leave it alone) and come back and look at it in three months time. I'm pretty sure you will be able to understand why it's such poor code and what is wrong with the whole design!

That's not saying anything rude about you - you are a student, and they rarely produce decent code because they don't know any better - you will improve with practice but it'll be worth you looking back at your earlier stuff to realize how far you have come!

I suspect some of them can't read ... :D

Not on this site: you would need to go to Freelancer.com and ask there.

But be aware: you get what you pay for. Pay peanuts, get monkeys.

Which function has the error? :D

And did you check what is happening to ans and input_stack at each pass through?

Yes, I could - but then you wouldn't learn anything, and learning to debug your code is a pretty big part of development!

You wrote the code, so you know exactly what it is supposed to do - so use that. Start by putting a breakpoint at the top of the Remove function, and step through your code, looking at what you expect to happen for each line, and comparing what did happen after it has executed.
When you find a difference, look at why; run it again up to that point and look more closely at the input.

It's not rocket science!

And by the way, using recursive functions to remove stuff is probably a bad idea: it uses a lot of stack space so there is a fairly small limit to the number of items you can process before your app crashes. Iterative solutions are generally better than recursion unless the algorithm is very specifically recursive as in a disk folder structure for example. A stack isn't truly a recursive data structure!

Anser updated.

And?
What have your tried?
Where are you stuck?
What help do you need?

Just repeating "I want ..." doesn't add any information to your original query.

What Java?
If you mean my coffee, it's a single estate 100% Arabica Brazilian medium roast called "Tamarin" that I buy in 6Kg boxes twice a year and feed into my bean-to-cup machine along with fresh, pure, Welsh water filtered through granite, and served as black, unsweetened doppio in a glass cup.
If you don't, you will have to be more precise.

You're welcome!

You're welcome!

How you can do what? Remember, we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.

Nope, normally the C# generates the HTML!

"heres my C#, what should i do?"

Write some code? You haven't done anything yet at all!

You can't - you cannot run a app on two different frameworks!
You will have to create a new project based on the correct framework type and transfer the code to that.

Except ... check the given birthdate for Dracula. :D

You're welcome - I hope you explain it better to them than you did to us.

Good luck!

No, I'm not "kidding you": you seem to have forgotten that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here.
All all you do when we ask - politely - for more info is repeat what you have said before.
So stop typing as little as possible and try explaining things to people who have no way to access your project! :D

And you're back to SHOUTING ...

 (select name, sum(qty) as QTY from table3 group by name) as QTY

You can't do that.
The "inner query" returns two separate values and that won't "fit" into a single column in the output - especially as they are different types!

You would have to decide exactly what you wanted to return to your PL code - if it's a string, then concatenate them, but if the PL wants to do anything useful with them then you need two separate columns.

I suspect you also want to look at how JOINs work:
https://www.w3schools.com/sql/sql_join.asp

But we still have no real idea of what data you expect to get out.

That doesn't make any more sense - perhaps if you try creating a couple of dummy tables with data and show us what you expect the query to do and why then we may be able to help you?

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

Frankly, that is the most miserable attempt at a "chat app" I have yet seen.
It doesn't even try to solve the question, even if we assume that the OP is still stuck and desperate for someone to do that homework assignment after nine long years ...

Don't post random crap to old questions: we do notice, and we do assume it's "rep point hunting" which we class as site abuse.

In this case it means "run your app again through the debugger looking for when they change to invalid numbers"
You can set conditional breakpoints[^] but that gets advanced pretty quickly.
If you aren't familiar with the debugger, just start by using the basics and move to more complicated stuff when you are familiar with the debugger and proficient at debugging in general.

And?
What does it do that you didn't expect, or not do that you did?
What have you tried to do to find out why?
Are there any error messages, and if so, where and when? What did you do to make them happen?

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with.
Use the "Improve question" widget to edit your question and provide better information.

Since Pete has answered this later one, I deleted the original.

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

Answer updated.

It's not when viewed, it's when answered - in this case initially by a spammer who was sent to moderation. When his junk is rejected, it updated the "modified" flag, which bring it to the top of the queue on the home page.

And I missed it ... :O

Oh come on - you know the language better than that: https://www.w3schools.com/python/python_functions.asp

If you don't, then you really, really aren't going to get far until you sit down and learn it ...

I'm not sure I understand what you are trying to say. Would you mind clarifying?

And?

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

Ha! Had to be something fairly obvious - and easy to miss.
Well done!

Last time, I said "tell us what it is doing that you didn't expect, or not doing that you did."
And "Tell us what you did to get it to happen."
And "Tell us any error messages."

Do you see any of that there? Do you see any clues as to what you tried to fix it, and what happened when you did?

Come on, give us a chance to help you! Just dumping your code on us and saying "it don't work" implies two things to most people:
1) You found the code on the internet and don't understand it at all.
2) You've made no effort to work out why "it doesn't work"

That's not a good look, honest ...

"It doesn't work" is probably the most useless problem report we get - and we get it a lot. It tells us nothing about what is happening, or when it happens.
So tell us what it is doing that you didn't expect, or not doing that you did.
Tell us what you did to get it to happen.
Tell us any error messages.
Use the "Improve question" widget to edit your question and provide better information.

:D

"It doesn't work" is probably the most useless problem report we get - and we get it a lot. It tells us nothing about what is happening, or when it happens.
So tell us what it is doing that you didn't expect, or not doing that you did.
Tell us what you did to get it to happen.
Tell us any error messages.
Use the "Improve question" widget to edit your question and provide better information.

While I applaud your urge to help people, it's a good idea to stick to new questions, rather than 8 year old ones. After that amount of time, it's unlikely that the original poster is at all interested in the problem any more!
Answering old questions can be seen as rep-point hunting, which is a form of site abuse. The more trigger happy amongst us will start the process of banning you from the site if you aren't careful. Stick to new questions and you'll be fine.

Given it was 2015, he's probably forgotten by now ... :D

This is an English language site, and we can only accept and answer questions in that language.
I have run this through Google Translate to produce a probably-good version, but you should check it and make sure it does say what you are actually asking.

As I said: "On Error Resume Next" doesn't fix errors, it hides them and throws away the info you need in order to fix it. Get rid of them all, and never use them again.

You can't fix errors when you don't know "where", "what", and "when" they occur - because that leads to "why" which you need to fix it!

Downvote countered.
Heavy hitter though - my counter balanced the down to a 3, so I doubt it was Karen that did it ... have you annoyed someone else recently? :D

You are kidding, right?
If you can't write this line of code yourself, then you need to go right back to the beginning of learning the language and start again:

switch (month.toLowerCase()){

Which bit is giving you difficulties?

You need to tell us these things! :D

There doesn't seem to be a "nice" way to do this, and it seems that the custom format is the problem - if you set it to space then the edit boxes the user needs aren't there even if you open the calendar with the arrow. I'd just set a default date to a silly value - "1st Jan 2001" maybe - and check it as part of my input verification process (and when they try to tab or click away from the DTP. Maybe paint it red as well to show it needs to be corrected (and back to black when it validates).

Having a blank box doesn't encourage the average user to do anything useful with it and can frustrate them a lot when they can't click into it or visibly tab in either.

Philistine! Rhubarb belongs in a crumble, hot, with salted caramel ice cream ... not a pie! :D

While I applaud your urge to help people, it's a good idea to stick to new questions, rather than 6 month old ones - particularly when they are clearly homework. After that amount of time, it's unlikely that the original poster is at all interested in the problem any more!
Answering old questions can be seen as rep-point hunting, which is a form of site abuse. The more trigger happy amongst us will start the process of banning you from the site if you aren't careful. Stick to new questions and you'll be fine.

I'd also strongly suggest that you don't post multiple solutions to the same question - again, this will be frowned upon by some, and the ban hammer wielded if it looks too much like point hunting - there is a comment facility for that, as well as editing your existing solution to improve it.

Not on my system: if I drop a DTP on a form, it starts at today's date ... which makes sense, since the whole idea of a DTP is that it always holds a valid DateTime in it's Value property.

Gawd knows - the question isn't at all clear ...

This is a help vampire: 468 questions, and he still can't do anything for himself.
I'm guessing he lied his way into a job and is using CP to keep him employed ... I don't look at his questions any more.

This is not a good question - we cannot work out from that little what you are trying to do. For example, what is an "ad user email"?

Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

And?
What have you tried?
Where are you stuck?
What help do you need?

None of the code you show has anything to do with XML or DataGridViews, so we have no idea where you are stuck ...

Use the "Improve question" widget to edit your question and provide better information.

There are far too many of these bleedin' frameworks ... :D

You're welcome!

"It doesn't work" is probably the most useless problem report we get - and we get it a lot. It tells us nothing about what is happening, or when it happens.
So tell us what it is doing that you didn't expect, or not doing that you did.
Tell us what you did to get it to happen.
Tell us any error messages.
Use the "Improve question" widget to edit your question and provide better information.

That gets more complicated, because it depends what the mobile app was written in: if it's interpreted like PHP or Python, then "yes".
If it's Objective C, Java, or C# then "maybe" as decompilers do exist and can make a good job of getting back original language code, albeit without any useful variable, method, or class names - and obfuscators can made that code even less readable. The results may be understandable by experienced developers.

Basically, if the computer can read it - and it has to be able to do that in order to run the app - then so can a human. The only factor is the difficulty of understanding what you can read!

Why are you asking? Do you have something specific in mind?

"It's not working" is one of the most useless problem descriptions we get: it tells us absolutely nothing about the problem. We don't know if you get an error message, or the wrong data, or even that that code compiles successfully!
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with.
So tell us what happens when you run that code, what you expected to happen, how you checked what happened. Help us to help you!
Use the "Improve question" widget to edit your question and provide better information.

Would what matter?

You're welcome!
As I said, I wouldn't!
(Answer updated)

At a guess, indent it to the same level as the for line. That puts them both inside the while loop.

Should be.

You can't - because there is no conversion from a string to a OrganizationItemDetails. What you need to do is work out how EntityCode relates to OrganizationItemDetails and modify your Select to perform the conversion.
You can't even cast from a collections of a derived class to a collection of it's base class:

        public class baseClass { }
        public class derivedClass : baseClass { }
...
            List<baseClass> listBaseClass = new List<baseClass>();
            List<derivedClass> listDerivedClass = new List<derivedClass>();
            listBaseClass = listDerivedClass;                    // ERROR
            listBaseClass = (List<baseClass>)listDerivedClass;   // ERROR

The only way to do that is to iterate the list and cast the elements to a new collection!

We'll have to send him to the naughty step. (He'll be easier to reach with the ban hammer there.)

"I meet some problem there"

What problem?
What have you tried?
Where are you stuck?
What help do you need?

What does that code do that you didn't expect, or not do that you did?
What have you tried to do to find out why?
Are there any error messages, and if so, where and when? What did you do to make them happen?

This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with.

Use the "Improve question" widget to edit your question and provide better information.

Maybe he fed the question into a C# compiler and crossed his fingers? :D

Normally, I wouldn't post a second solution, but in this case ... see #3

You're welcome!

You don't need another class, it's possible to do it without by using a Stack or Stacks - but it's messy and quite difficult to work with. You could do it with a recursive method, but that will severely limit the size of the input data as the one-and-only Thread stack is pretty small.
Creating a "helper class" makes the whole job a lot easier and doesn't take much effort or space.

As an added bonus, it's considerably more time-efficient: since you are processing each input character once and only once it's O(n) which is the best efficiency you can get! :laugh:
Your solution is close to O(n²)

Answer updated.

Your code is pretty nasty - I'd use a single pass through the input string with no nested loops and build up a tree structure of all tag elements with their counts as I went. Then a single pass through that collection and you print all the results.

It's a lot clearer what is going on, and doesn't need your IndexOf calls or nested loops at all.

Show us the way you load the DGV, and how you add the columns and their data.
(There are several different ways to do this!)

As a solution is best.

So remove the call to drop from the main window and just leave the text box - or vice versa depending on where you want the user to have to drop the data.

If you have two Drop calls, they *BOTH* get honoured if the user drops in the right place.

:sigh:
You have shown us a tiny fragment, but the handler is added elsewhere and we can't see that (or those) bits of code ...

You're welcome!

No, we are not a "code to order" site.

That wou8ld need a separate table for each *possible* product: and quite possibly each model of each type of product. And that means your DB rapidly becomes unworkable, and processing it to extract useful info becomes a nightmare.

Instead, a general "Attributes" table could be arranged to have an ID, AttributeType, and ApplicableClasses which restrict what type of product it can be applied to. For example a TV might have "PictureSize" and "HDMI ports count" while a refrigerator wouldn't but would have "Freezer compartment" and "Moveable shelves". But two different TVs from different manufacturers would have the common attributes - but one might be curved or 3D capable while the other isn't.
Setting that up as separate tables for each product is really nasty to use in practice, no matter how simple it seems to start with!

That's what TAB is there for: to enter the data and move right along the row while ENTER moves down through the column.
Standards are there for a reason and while all apps have their own features you undermine standards at your peril.

This is not a good question - we cannot work out from that little what you are trying to do. We have no idea what error message you get, when you get it, what you did to get the error, or what you have tried in order to fix it - and we can't run one line of code in isolation to find out!

Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.
Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

Use the "Improve question" widget to edit your question and provide better information.

While I applaud your urge to help people, it's a good idea to stick to new questions, rather than 8 year old ones. After that amount of time, it's unlikely that the original poster is at all interested in the problem any more!
Answering old questions can be seen as rep-point hunting, which is a form of site abuse - and a vague "solution" like yours does make that look more likely. The more trigger happy amongst us will start the process of banning you from the site if you aren't careful. Stick to new questions and you'll be fine.

Depends on the app and how it's written.
Best way is "try it and see what happens" in a command line manually.

You're welcome!

That's the way I do it - because if you have many rows of data only some are visible, so the code only needs to be executed on the visible cells at any time. Who cares about the colour of cells the user isn't looking at? :laugh:

You're welcome!

That's probably because you don't Invalidate the DGV - that's what triggers a redraw.
Have you seen this:
Colouring DataGridView Cells According to their Content in WinForms[^] - it may help.

In what way?

No, that's the wrong approach - you pass the length of the barray you want to recieve in, not the max length of the buffer that supplies the data!
Your way is like fitting a fuel tank to your car that is the size of the underground tank at the gas station, and always trying to fill it completely! It may work, but you end up with a huge tank of fuel attached to the roof of your car with a dribble of fuel in it because the pump will only allow you £100 at a time ...

Ask for what is in the buffer, not what could be in the buffer!

Don't "bump" your question: it's rude, arrogant, unnecessary, and doesn't help you get a faster answer. By all means add info, but just editing it to get it back to the top of the "unanswered" list is just saying "I'm more important than anyone else, so deal with *MY* question and ignore the rest".
And so is everybody else, and everybody else's questions. If everyone was this thoughtless and rude, you'd never get an answer to anything, because all we'd be able to see would be 100 pages of idiots bumping all the real questions to page 100+
All you do is annoy people, and get them to deliberately not even look at your question, much less answer it.

As Richard has said, don't post junk as a solution: it removed what little there was of your question from the "Unanswered" queue so fewer people will see it.

We're not being deliberately annoying, we aren't "out to get you" - we genuinely can;t help you based on the little you have told us so far, so repeating your demand doesn't help anyone.
You need to think about your problem and how you describe it to people who have no other context in a way that makes sense to them: and without that context "create another node which will take value from an object which i will call in another function" means nothing.

Worse, we look at your code and it's clear that it's written by someone who doesn't know what they are doing: if you get that working then your app will crash pretty quickly and possibly destabilize windows at the same time.

Don't repeat what little you told us: add new information.

This is not a good question - we cannot work out from that little what you are trying to do. Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with - we get no other context for your project.

Imagine this: you go for a drive in the country, but you have a problem with the car. You call the garage, say "it broke" and turn off your phone. How long will you be waiting before the garage arrives with the right bits and tools to fix the car given they don't know what make or model it is, who you are, what happened when it all went wrong, or even where you are?

That's what you've done here. So stop typing as little as possible and try explaining things to people who have no way to access your project!

And?
What have you tried?
Where are you stuck?
What help do you need?

Use the "Improve question" widget to edit your question and provide better information.

You're welcome!

I could ... but it's your assigment, not mine!

There isn't a single line in that code that would pass a code review: from magic numbers to memory leaks, that it doesn't do what you want is the least of your problems.
When you create any graphics object, it is your responsibility to Dispose of it when you are finished as there is a very limited supply of the Handles that Windows relies upon to process them: you don't do that, you create a new Font instance each time you want to draw. Create all the fonts you will need when your app starts (make them static in your class) and re-use them over and over. That way, you only use a small number of Handles which will be automatically released when the app ends.

Your app as it stands will quickly throw an "out of memory" exception of windows will become unstable as you will use up the supply of handles long before the system needs to call in the garbage collector.

His loop prints all it's data at a fixed point: overwriting the previous line(s).
And there is loads of other stuff wrong with that code ...

I did. Read what I said again, and then look at the content of your loop ...

And why the heck are you printing "solid lines" with text? You do realise that the Graphics class includes methods other than DrawString, don't you? You want to print lines (solid or dashed) use DrawLine or DrawRectangle, or ... loads of options.

You're welcome!

I removed your link to prevent you being kicked off as a spammer.
Since I don't think that was your intention it would be unfair of us to wield the ban hammer - unless of course you try to re-insert it! :laugh:

Your question is still there ... it's publicly available.

Your post as a "solution" has been closed by the community as it was deemed "not an answer" - which was correct, it wasn't!

That's why you use a debugger - it shows you exactly what your code is doing while it is running, and lets you see why.
A couple of minutes with a debugger and it should be pretty obvious.

Do you want to try that comment again, as it doesn't make a lot of sense in English ...

You're welcome!

Framework, WinForms.

If it's a Double, it can't contain a null value anyway - it's a value type, not reference.
It would have to be a Double? but that would mean he wouldn't get the problem anyway ... (I think, I've not played with nullable types in VB)

You sure?
https://learn.microsoft.com/en-us/dotnet/visual-basic/language-reference/operators/null-conditional-operators

I just checked and it works for me:

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim str As String = Nothing
        If str?.ToString() Is Nothing Then
            Console.WriteLine("Yes")
        Else
            Console.WriteLine("No")
        End If
    End Sub

And?
What have you tried to fix this?
Where are you stuck?
What help do you need?

Use the "Improve question" widget to edit your question and provide better information.

Probably El Idiot, and his opinion really doesn't matter to me anyway!

I think he's noticed we don't care ...

A better solution is to change the SELECT query - then you don't have to faff about at all ...

Dat's de bunny! :D

Compare these two lines from your code:

lives - 1

score += 1

One works, one doesn't! :D

Somebody is down voting everything I do - it doesn't matter at all, I don't really pay attention to my rep. I think I annoyed him when I explained why we don't do homework for people! :laugh:

You're welcome!

Did you forget the link?

Only if you work for Starfleet! :D