FileStream can't access the file because it's being used by another process

Question

I\'m new at web app in ASP.NET and I came across this problem.

I have a page whe there is a Button to download a template.xls that is previously stored at a SharePoi

Answer 1

From what I can tell, you're opening the file-stream, and then trying to open it again, before you close it.

Initial opening of the file:

FileStream _FileStream = new FileStream(apPath, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite);

and

Response.TransmitFile(apPath); 

seems to be trying to open the file again.

I would suggest calling

_FileStream.Close();

before calling TransmitFile.