Is it possible to hit a WinForms "Button" from an Excel spreadsheet (VBA)?

The traders are lazy and they don't want to switch applications to hit buttons. When they hit the button in Excel, it sh开发者_StackOverflow社区ould be the same as hitting another button in my WinForms app (which pops up a dialog box). Doable?

---

Yes.

You need to put your functionality into a [ComVisible(true)] DLL and add a reference to it in VBA.

Alternatively, you can write an Excel addin in C#.

---

1. Write a COM server that communicates with the WinForms app using the inter-process communication mechanism of your choice
2. Add an Excel button to the sheet
3. Write some VBA to call the COM server

It would be nice to expose a COM object directly from the WinForms app in such a way that you can call it through the VBA GetObject function. However, I can't see an obvious way to expose an object to the COM running object table from .NET.