get file type of request.files in asp.net

Question

How to get file extension from the request.files collection in asp.net?

Answer 1

I think this should do the trick:

foreach (HttpPostedFile file in Request.Files) {
    string extension = System.IO.Path.GetExtension(file.FileName);
}

Answer 2

Each HttpPostedFile in Request.Files has a FileName that includes the extension; to get just the extension, use Path.GetExtension(file.FileName)

Note that using the content-type may be more reliable in many cases.