How do I send messages to another form

[kayhustle]

I want to know how to send data from one form to another? Like lets say I want my program to put data in the textbox of another form, how would I go about doing this? Thanks, K

[CWIZO]

This was anwserd so many times in thsi forum ... Search a little. But the idea is to pass a refrence of the form with the textvox to the form that wants to change that textbox in the constructor. Q:What does the derived class in C# tell to it's parent? A:All your base are belong to us!

[Jeff Varszegi]

Even better, use MVC with or without a Mediator. -Jeff here, bloggy bloggy

[kayhustle]

Thanks, but what if I didn't create the class for the textbox I want to send to. For example, if I wanted to send info to a text box in a web browser, where I can start the process with the Process class, but how would I access a reference to it?

[Heath Stewart]

That's been answered many times as well. You need to get a handle to the process (see the System.Diagnostics.Process class in the .NET Framework SDK) then P/Invoke FindWindow and FindWindowEx to get the window handle (HWND - represented by an IntPtr in .NET) of the control. Then you can P/Invoke SendMessage to send WM_SETTEXT to the HWND with the text you want to set. Search this forum for more information, and see the Platform SDK for details. Previous experience with Windows messaging will definitely be a plus.

Microsoft MVP, Visual C# My Articles

[kayhustle]

Thanks alot I saw your previous post with the code. I searched for this, but I wasn't getting back results that applied to what I wanted to do, I guess the keywords I was searching for weren't specific enough. K