Getting extension of the file in FileUpload Control

Question

At the moment i get file extension of the file like :

string fileExt = System.IO.Path.GetExtension(filUpload.FileName);

But if the user cha

Answer 1

Whatever the user renames the file extension to, that is the real file extension.

You should never depend on the file extension to tell you what's in the file, since it can be renamed.

See "how can we check file types before uploading them in asp.net?"