Accessing a windows control from a backgroundworker

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Notepad is a basic text-editing program and it's most commonly used to view or edit text files. A text file is a file type typically identified by the .txt file name extension.

Posted 30-Mar-12 1:47am

greatnishant

Updated 11-Jun-13 21:25pm

v4

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CHill60 12-Jun-13 7:10am

Any particular reason for overwriting your year-old question with a statement about Notepad?

greatnishant 17-Mar-15 6:07am

Nope

CHill60 17-Mar-15 6:16am

Then why do it? Some members went to the trouble of answering your question - you've placed their responses entirely without a context

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V. · Answer 1 · 2012-03-30T02:58:00

You should be able to use the Dispatcher[^] property on that. Use the Disptachers CheckAccess() method the check how to access the control. (note CheckAccess does not appear in intellisense.)

Here's a sample where the backgroundworker thread calls the SetMsg function to update the label control:

C#

private void SetMsg(string txt, string fulltxt){
	if(lbl_info.Dispatcher.CheckAccess()){
		lbl_info.Content = txt;
		fullinfomessage = txt + "\r\n" + fulltxt;
	}				//end if
	else{
		lbl_info.Dispatcher.Invoke(new UpdateTxt(SetMsg), new object [] { txt, fulltxt });
	}				//end else
}

//the delegate is defined as follows: private delegate void UpdateTxt(string txt, string fulltxt);

Hope this helps.

fjdiewornncalwe · Answer 2 · 2012-03-30T04:23:00

Solution 2

This article explains this topic very well. You should use the search functionality on CP to see if the answers to your questions already exist. Cheers.

Accessing Windows Forms Controls across Threads[^]

Posted 30-Mar-12 4:23am

fjdiewornncalwe