This tip shows how to fix Invalid FORMATETC structure error when you drag and drop a control from Toolbox to a XAML file.
Invalid FORMATETC structure Error
Problem:
Usually, you get this error when an assembly reference in your Visual Studio is messed up.
In my Visual Studio 2008, I was getting this error when drag and drop a control from Toolbox to a XAML page.
"The operation could not be completed. Invalid FORMATETC structure."
Resolutuon:
I right click on Toolbox and selected "Reset Toolbox" menu item. It resets the assembly and control references and I no longer get this error.
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