Why doesn't Clipboard.GetText work?

String str = Clipboard.GetText();

throws an exception

开发者_开发技巧

An unhandled exception of type 'System.StackOverflowException' occurred in PresentationCore.dll

How do I prevent this problem?

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You could try:

Clipboard.GetText(System.Windows.Forms.TextDataFormat.Text)

Or take a look here: Clipboard.GetText returns null (empty string)

http://msdn.microsoft.com/es-en/library/system.windows.forms.clipboard.gettext.aspx

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Just add one line above the main() method, your code will look like this:

[STAThread]

public static void main()

This solved the problem for me.

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Look at the accepted answer in this thread:

Link to working code sample

In summary you need to ensure you start or are running in an STAThread with staThread.SetApartmentState(ApartmentState.STA); I also suggest you add a little bit of sleep or wait after join as sometimes the clipboard content is not immediately available when staThread.Join() returns.