C# Excel Add-in Question
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Hi! In one of my base classes, I have a function which receive a callback from another application. In this function, I would like to access Excel.Application object but I receive an exception: QueryInterface for interface Excel._Application failed. If my class were inherited from Windows.Forms, I could use BeginInvoke function. So I would like to know a way to access Excel.Application object in my callback function. Build with C# for Excel Object 9.0 (Excel 2000) Thanks in advance!