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You cannot disable Ctrl-Alt-Delete.
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As Jon said, Windows will not allow you to disable CTRL-ALT-DEL. This is because this particular shortcut is used to signal to the Windows OS that you want to perform some critical action - log off, terminate a program, etc. In fact, in some Windows setups, you are required to press CTRL-ALT-DEL before you login to the system. This is so that you know that you're typing your username and password into a real Windows OS login dialog - not some spoofer.
That said, it sounds like you might be trying to write a screensaver program. Don't worry about those key combinations. Just write your program as a normal .EXE file, then when it is compiled change the file extension to .SCR. Then right-click on the file from Explorer and hit Install. You'll now be able to use this as a screensaver, and Windows should take care of those pesky key combinations for you automatically.
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Use keyboard hooking to do whatever you want. This way, you can hook all the key events in windows for all windows and cancel the ones you don't want to be processed by "your Window".
this topic is not a small one and requires experience. Please checkout google for more information and source code examples.
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I need a regular expression which find the word inside < and >.
For example:
In the following expression,
<this.text> + <<another.text>>
it should only find <this.text>
It should only search words starting and ending with <> not <<>>.
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Is this what you want?
[^<](?<Text><[^>]*>)[^>]
This will result in a named capture called "Text" that contains the string including < and > (but not << and >>) as you specified. I guess you'll have to try it out with a larger data set to see if it meets your needs completely.
-- modified at 5:02 Friday 4th May, 2007
Previous post got buggered w/ HTML tags... ;]
--
Umm... what's a .sig? ;]
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Sorry, have to correct myself yet again! ;] My previous expression would not match at the very beginning or end of a string, so we need to use Zero-width negative lookbehind assertion (?<!) and Zero-width negative lookahead assertion (?!) to make sure that if there is not anything preceding or following the string, it'll match as well. So, here's the full expression:
(?<!<)(?<Text><[^<>]*>)(?!>)
--
Umm... what's a .sig? ;]
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Thanks
its working fine, is there any way that we can restrict the selection by the no of < and > signs. For Example if i want it neglect <<< and select <<.
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Sure - you could simply put an additional < and > on the inside part of the expression, as follows:
(?<!<)(?<Text><<[^<>]*>>)(?!>)
Then you'll match on anything enclosed in << and >>, but not any of < and >, <<< and >>> and more such as <<<< and >>>>.
--
Umm... what's a .sig? ;]
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 Thanks alot ...
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Hi,
I used TCPClient for Http Request. and here is my code
TcpClient client = new TcpClient("www.google.co.in", 80);
NetworkStream stream = client.GetStream();
string str = "GET / HTTP/1.1 \r\n Host: www.google.co.in \r\n Accept: */*
\r\n Connection: keep-alive\r\n ;
byte[] send = Encoding.ASCII.GetBytes(str);
stream.Write(send, 0, send.Length);
byte[] bytes=new bytes[client.ReceiveBufferSize];
if (stream.DataAvailable)
{
int count = stream.Read(bytes, 0, client.ReceiveBufferSize);
}
String data = Encoding.ASCII.GetString(bytes);
After Sending my request, i am not getting the response.I think the problem
is with my request. How my request should be if i use TCPClient.
Thanks in advance
Sakthi.
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Hi
I got the response as i assumed my request string should be like
string str = "GET / HTTP/1.1 \r\n Host: www.rediffmail.com \r\n Accept: */* \r\n Connection: keep-alive \r\n\r\n";
Regards
Sakthi
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Hi,
You better use the HTTPResonse handler in C#
ie:
using System.Net;
...
...
public string WebResponse(string URL)
{
if (!URL.ToLower().StartsWith("http://") || !URL.ToLower().StartsWith("https://"))
URL = "http://"+ URL;
HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create(URL);
HttpWebResponse WebResp = (HttpWebResponse)WebReq.GetResponse();
return WebResp.StatusDescription;
}
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Hi,
I can use HttpWebRequest for sending Request Messages.
But for each request, i have to create httpwebrequest object and i have to
establish connection. Is it possible to use the same connection for more than
one request in httpwebrequest.
Regards
Sakthi
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Something like this?
using System.Net;
namespace Sakthi
{
public class SakthiForRequest
{
HttpWebRequest WebReq;
HttpWebResponse WebResp;
public string SakthiRequest()
{
string request[] = new string[10];
request[0] = "www.micrsoft.com";
request[1] ............
request[9] = ......;
string webresponse[] = new string[10];
for (int i =0 ; i < 10; i++)
{
webresponse[i] = WebResponse(request[i]);
}
}
}
public string WebResponse(string URL)
{
if (!URL.ToLower().StartsWith("http://") || !URL.ToLower().StartsWith("https://"))
URL = "http://"+ URL;
WebReq = (HttpWebRequest)WebRequest.Create(URL);
WebResp = (HttpWebResponse)WebReq.GetResponse();
return WebResp.StatusDescription;
}
}
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I m trying to create a registry editor using c#.net. i have populated all the registry keys and subkeys in a treeview. I want to display valuenames, type and values in a listview when I click a subkey in treeview. how can i do that. pls help me out of this problem.
Regards
Paramhans
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you can get value names by RegistryKey.GetValueName() it will give string array. you can get their values by RegistryKey.GetValue("name") and if you are using .net 2.0 then you can also get their type/kind by RegistryKey.GetValueKind("name").
Regards
Shajeel
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Hi Friend'z...
Can anyone explain me about Indexers with real time example. Where should we use indexers in programs? Why should we use indexers? what r the advantages of Indexers in c#?
thanks in advance...
shah_tech,
Tr. Systems Engineer
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Hi Shah
Indexers allows you to access the object like you are accessing the array .
Indexers permit instances of a class or struct to be indexed in the same way as arrays. Indexers are similar to properties except that their accessors take parameters
<br />
class SampleCollection<T><br />
{<br />
private T[] arr = new T[100];<br />
public T this[int i]<br />
{<br />
get<br />
{<br />
return arr[i];<br />
}<br />
set<br />
{<br />
arr[i] = value;<br />
}<br />
}<br />
}<br />
<br />
class Program<br />
{<br />
static void Main(string[] args)<br />
{<br />
SampleCollection<string> stringCollection = new SampleCollection<string>();<br />
stringCollection[0] = "Hello, World";<br />
System.Console.WriteLine(stringCollection[0]);<br />
}<br />
}<br />
<br />
<br />
Indexers enable objects to be indexed in a similar way to arrays.
A get accessor returns a value. A set accessor assigns a value.
The this keyword is used to define the indexers.
The value keyword is used to define the value being assigned by the set indexer.
Indexers do not have to be indexed by an integer value; it is up to you how to define the specific look-up mechanism.
Indexers can be overloaded.
Indexers can have more than one formal parameter, for example, when accessing a two-dimensional array.
Thanks and Regards
Sandeep
If you want something you never had,
do something you have never done!
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I had problem with listbox in c#:
the problem is i have to listboxes the items in listbox1 moves to listbox2
and next button is pressed it moves to the nextpage if the items in listbox2 are moved back to listbox1 and next button is pressed it should show error message. upto here the functionality is working fine
the problem is there is a link below to delete the items in listbox1
once i deselect the items in listbox2 and then delete the items in listbox1
and press the nextbutton the message is not fired instead it is navigating to the next page.
I used javascript for moving the selected items from listbox1 to listbox2 and for deleting the items in listbox1
i require solution to this problem
any one please help me out in solving this problem
Thanks ®ards
giribabu
hi
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Check your logic on next buttion click there might be any problem can you post the javascript
Thanks and Regards
Sandeep
If you want something you never had,
do something you have never done!
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Hi all,
i cant get the Web control Link button to be displayed in a html tag,
I got an a display msg "System.Web.UI.WebControls.LinkButton " cos it is converted to a string in my below codin.
How do i convert the lbtn linkbutton below so that it could appear as expected?
LinkButton lbtn = new LinkButton();
lbtn.ID = file.ServerRelativeUrl;
lbtn.Text = "Check Out";
lbtn.Command += new CommandEventHandler(testButtonClick);
lbtn.CommandName = file.Name;
lbtn.CommandArgument = file.ServerRelativeUrl;
string curFile = "<A HREF='" +
SPEncode.HtmlEncode(file.ServerRelativeUrl) + "'>" +
SPEncode.HtmlEncode(file.Name) + "</A>";
s += "<div id=x_" + i + "_" + j +
" style='margin-top:2;margin-right:" + Indent + ";margin-left:" + Indent + "' " + " onclick='showHide(window.event," + j + ");'";
s += " style='display:none'>";
s += "<font color=" + othersColor + " face=Wingdings>" + "</font> " + lbtn + " " +curFile;
s += "</div>";
Thanks in Advance!
minlynn
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You can't like this way
lezahtiek wrote: s += "" + " " + lbtn + " " +curFile;
You have to add the control to the page
Do one thing Add one place holder where you want to show the Link button then in the code add the button dynamically bu
Placeholder.Controls.add(linkButton);
i think this will help you
Thanks and Regards
Sandeep
If you want something you never had,
do something you have never done!
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please take a look at the below link:
http://i169.photobucket.com/albums/u228/hazel_nut_622/webpart.jpg
i need to add the button dynamically beside each of the file name, for example a check out button beside "New Text Document.txt"
what you see in this link are all generated at a go, for a web control button it will be displayed outside of this whole part.
More source code;
SPFileCollection files = folder.Files;
foreach (SPFile file in files)
{
LinkButton lbtn = new LinkButton();
lbtn.ID = file.ServerRelativeUrl;
lbtn.Text = "Check Out";
lbtn.Command += new CommandEventHandler(testButtonClick);
lbtn.CommandName = file.Name;
lbtn.CommandArgument = file.ServerRelativeUrl;
string curFile = "<A HREF='" +
SPEncode.HtmlEncode(file.ServerRelativeUrl) + "'>" +
SPEncode.HtmlEncode(file.Name) + "</A>";
s += "<div id=x_" + i + "_" + j +
" style='margin-top:2;margin-right:" + Indent + ";margin-left:" + Indent + "' " + " onclick='showHide(window.event," + j + ");'";
s += " style='display:none'> ";
s += "<font color=" + othersColor + " face=Wingdings>" + "</font> " + lbtn + " " +curFile;
s += "</div>";
}
really need some help!
thanks alot in advance.
minlynn
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Please note, I am still learning!
I have a class that holds information about an object. I have another class that I would like to manage a collection of those objects. What I am trying to do is when a user updates some values for an object, that the manager then resorts the order of the collection automatically. I would also like to include an ability to 'lock' the sorting so a user could do a batch of changes and then sort at the end. I was looking at delegates, but I am not sure they are what I need. In fact, I am not even sure that what I want to do is really possible. Here is a basic example of what I am trying to do:
class cThing
{
private float _depth;
public float Depth
{
set
{
_depth = value;
}
}
}
class cThingManager
{
public List<cThing> MyThings = new List<cThing>();
public void Sort()
{
MyThings.Sort();
}
}
I would imagine this is possible, but I don't know what it would be called so I've been having a hard time searching for information on this. Any help is appreciated!
Edit - I figured out how to do the locking!
-- modified at 22:50 Thursday 3rd May, 2007
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You could add an event to your cThing class (maybe called DepthChanged) that is fired whenever the depth changes. You're manager has to subscribe an event handler to the event of each item it manages and inside the event handler sort the list, if sorting is not locked.
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook www.troschuetz.de
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