Windows Forms

Re: Not able to call the procedure.

16-Apr-12 10:20

I have deleted the bday option but again same issue.....and con.open() is not an issue....

and i have checked sp for its existence....no issue....

karthiDebug25-Apr-12 20:11

karthiDebug

25-Apr-12 20:11

i think as keyword missing.
First exexcute the block in sqlserver then try into fron tend.
But best practice is using sp

How to create mysql stored function from c#.net

nitish_0715-Apr-12 0:51

Re: How to create mysql stored function from c#.net

15-Apr-12 0:51

I have to create mysql stored function from c#.net.
User will create the function at run time and i have to pass this string in odbc command like this...

rt.Text = "CREATE FUNCTION" +" "+ "`" + node + "`" +" "+ "." +" "+"'"+textBox1.Text +"'"+" "+"  ()"+" "+ "@RETURNS INT"+" @BEGIN@END;";
            rt.Text = rt.Text.Replace("@", System.Environment.NewLine);
OdbcCommand cmd = new OdbcCommand(rt.text, cn);
                                cmd.CommandText = rt1.text;
                                cmd.ExecuteNonQuery();

But it shows that You have syntax error.Check the manual that correspond to your mysql document...so plz tell me what is the problem.....??

Eddy Vluggen15-Apr-12 1:30

Eddy Vluggen

15-Apr-12 1:30

nitish_07 wrote:
But it shows that You have syntax error

If you encounter an error or an exception, than paste the entire thing into your post. I'm guessing that it's an exception that's thrown on ExecuteNonQuery as your Sql-statement is malformed. It's also damn hard to read.

Concatenating strings is fun, but you don't want to overdo it. The code below is allowed too;

rt.Text = "CREATE FUNCTION `" + node + "` . '"+textBox1.Text +"'   () "+ 
"@RETURNS INT @BEGIN@END;";

            rt.Text = rt.Text.Replace("@", System.Environment.NewLine);

OdbcCommand cmd = new OdbcCommand(rt.text, cn);
                                cmd.CommandText = rt1.text;
                                cmd.ExecuteNonQuery();

I'm going to guess again that it's the `-character that's not being recognized, and that it should be replace with a '. Further, you'd want a Debug.Print(rt.Text) so that you can easily validate the syntax of your query.

Hope this helps Smile | :)

Bastard Programmer from Hell Suspicious | :suss:

Re: How to create mysql stored function from c#.net

nitish_0715-Apr-12 4:33

Re: How to create mysql stored function from c#.net

15-Apr-12 4:33

Error is this

System.Data.Odbc.OdbcException: ERROR [42000] [MySQL][ODBC 5.1 Driver][mysqld-5.0.77-community-nt]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''df' ()
RETURNS INT
BEGIN
return 1;
END' at line 1

and string is i.e rt.text=

"CREATE FUNCTION `userdb` . 'df'   () \nRETURNS INT \nBEGIN\nreturn 1;\nEND;"

Eddy Vluggen15-Apr-12 4:49

Eddy Vluggen

15-Apr-12 4:49

I think the error goes away if you change the type of quote in there;

"CREATE FUNCTION 'userdb'.'df'() \nRETURNS INT \nBEGIN\nreturn 1;\nEND;"

Again, the character ` cannot be used instead of the character '.

Bastard Programmer from Hell Suspicious | :suss:

Re: How to create mysql stored function from c#.net

nitish_0715-Apr-12 5:31

Re: How to create mysql stored function from c#.net

15-Apr-12 5:31

ok I am trying...actually this is written in the orginal mysqlbrowser when i create the fucntion

SQL

CREATE FUNCTION `userdb`.`gh` () RETURNS INT
BEGIN
  return 1;
END$$

so i think this is also ` not ' ???

nitish_0715-Apr-12 5:37

Re: How to create mysql stored function from c#.net

15-Apr-12 5:37

Thanks man done.... Smile | :)

Dave Kreskowiak15-Apr-12 5:45

Dave Kreskowiak

15-Apr-12 5:45

First, using string concatentation to build a query is just plain bad practice. Especially when you are doing with with consecutive, individual characters. It makes your code impossible to read and debug accurately.

Oh, and your call to Replace is not needed at all. Using the @ character in a string to denote new lines in an SQL statement is a bad idea since SQL parameters usually start with that character.

A better method is to use String.Format:

string queryString;
queryString = String.Format("CREATE FUNCTION '{0}'.'{1}'()\nRETURNS INT\nBEGIN\nEND;", node, functionName);

Now is your code easier to read, or is mine?

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: How to create mysql stored function from c#.net

nitish_0715-Apr-12 5:58

Search Box In Windows Form

15-Apr-12 5:58

Yes you are right...Thanks man....If you could provide the solution for the problem which i posted some min ago....

Anurag Sarkar14-Apr-12 20:43

14-Apr-12 20:43

Every one voted it down how can i remove it?
Ques was:- I am Trying to built the search box for my windows app that searches the data from the database
Thanks

modified 15-Apr-12 9:27am.

Richard MacCutchan14-Apr-12 22:22

Richard MacCutchan

14-Apr-12 22:22

You need to give some more detail about what this box will do and what part you are having trouble with. Putting your question into Google will give you some useful suggestions.

Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness

Anurag Sarkar15-Apr-12 4:20

15-Apr-12 4:20

Thanks For help

Eddy Vluggen15-Apr-12 1:25

Eddy Vluggen

15-Apr-12 1:25

onurag19 wrote:
I want to develop a search box for my windows form application please help..

You might want to elaborate a bit on your question. What's going to be searched? A database, the internet, the local filesystem?

If you're targetting a database, read up on the LIKE function.

Bastard Programmer from Hell Suspicious | :suss:

Anurag Sarkar15-Apr-12 4:20

15-Apr-12 4:20

Thanks that wat i was looking for thanks a lot

Luc Pattyn15-Apr-12 4:24

Luc Pattyn

15-Apr-12 4:24

Please don't remove original content, it ruins the whole thread as what remains is unintelligible.

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

Richard MacCutchan15-Apr-12 4:50

Richard MacCutchan

15-Apr-12 4:50

onurag19 wrote:
Ques was:- I am Trying to built the search box for my windows app that searches the data from the database

This is no more descriptive than your original question. Try asking a question with some specific detail; you have still not explained which part of this project is causing you difficulty.

Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness

Anurag Sarkar15-Apr-12 4:53

15-Apr-12 4:53

I am Trying to built the search box for my windows app that searches the data from the database like if admins types the keyword student the name of all the students should be shown. I have used the LIKE operator for it but its not working accurately.

Richard MacCutchan15-Apr-12 5:19

Richard MacCutchan

15-Apr-12 5:19

onurag19 wrote:
but its not working accurately.

I don't think anyone can guess why from that little information. Try and explain clearly what you are doing, what results you expect, and what results you see. If some of your code is failing then show that code (not all, just the failing portion), and be sure to check and explain the values of any variables used.

Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness

Anurag Sarkar15-Apr-12 4:55