Silverlight file download for COM Interop

Question

Is the following possible in Silverlight when a button is clicked?

• An Excel template is downloaded from a remote server and saved to the local machine
• An instance of the template is then opened on the client
• A macro is then executed within the new Excel document

I can do everything apart from saving the template to the local machine. I can save this in isolated storage but then I don’t know where this is when trying to open it from the Excel COM interop code. Has anyone any ideas or is this not possible?

Answer 1

You need to use the SaveFileDialog which is documented here to get the file to be saved outside of isolated storage. It doesn't help with the excel part, and there is no way to get directory information on a file being saved or opened on the client side in Silverlight, so I have no easy idea on the rest.

(The hard way is a client side COM Interop Application which defeats the purpose of using Silverlight for this)