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C# SendKeys -  Need to use SendKeys or any other method to set 'focus' to another application.

Posted on 2004-04-12
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Last Modified: 2012-06-27
I have C# App. that launches another program. I need to write code that will set focus to the other application and do a paste. I have the code to paste.
Can not figure out how to set focus to the other app. Even if the other app. the top most app. The Send Keys does not work. Can I do a SendKeys Mouse Click?
TIA
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Question by:JElster
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Expert Comment

by:venkateshwarr
ID: 10805405
Hi JElster,
you can send relevant numer of "tab" keys to go to that particular field...

Cheers!
venkat.
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LVL 1

Author Comment

by:JElster
ID: 10805477
Does not work...
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LVL 22

Expert Comment

by:_TAD_
ID: 10805692


You'll need to use WinAPI to find the proper window and set the focus manually.


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Author Comment

by:JElster
ID: 10805717
Any idea how ? Thanks....
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LVL 22

Accepted Solution

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_TAD_ earned 100 total points
ID: 10805723


<Call DLL>

[DllImport("User32",EntryPoint="SetForegroundWindow")]
private static extern bool SetForegroundWindow(System.IntPtr hWnd);



<Execute Function   -   Button Click Event>

if(prc.Responding)
{
     SetForegroundWindow(prc.MainWindowHandle);
     SendKeys.SendWait("_TAD_");
     SetForegroundWindow(this.Handle);
}




The process "prc" is a notpad process that I opened.
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