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Asked: 2026-05-18T10:42:19+00:00

I would like to know how to communicate between forms using C#? In Visual

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I would like to know how to communicate between forms using C#?

In Visual Basic it was easier since each form had it’s own instance, with C# it’s different.

In the Program Class I setup a public and static variable that hold my form:

public static FormProcess2 frmProcess2 = null;

Then in the Main method I create the form and show it up:

frmProcess2 = new FormProcess2();
frmProcess2.ShowDialog();

Now when that form loads, it load a background process that process XML files.
And the method that process all the files are in another class name XMLParser.
So in the BackgroundWorker doWork I load that method by:

XMLParser.Start();

Now the question is, how I can modify the frmProcess2 controls in the XMLParser class?
I wanted it to show what’s being updated by changing the label text as well as put some nice progress bar there.

But I can’t access the Program.frmProcess2 controls, all I can access is it’s defaults only…

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1 Answer

  1. Editorial Team

    well you can use delegates to communication between windows forms.
    Check http://www.c-sharpcorner.com/uploadfile/mosessaur/winformsdelegates09042006094826am/winformsdelegates.aspx

    For Delegates

    EDIT

    Check
    Delegates (C# Programming Guide)

    http://msdn.microsoft.com/en-us/library/ms173171%28VS.80%29.aspx

    Creating Custom Delegates and Events in C#

    http://www.csharphelp.com/2007/02/creating-custom-delegates-and-events-in-c/

    Introduction to Delegates and Events

    http://www.csharp-station.com/Tutorials/lesson14.aspx

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