Is there any way to get the file extension from a URL

Question

I want to know that for make sure that the file that will be download from my script will have the extension I want.

The file will not be at URLs like:

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Answer 1

It is weird, but it works:

string url = @"http://example.com/file.jpg";
string ext = System.IO.Path.GetExtension(url);
MessageBox.Show(this, ext);

but as crono remarked below, it will not work with parameters:

string url = @"http://example.com/file.jpg?par=x";
string ext = System.IO.Path.GetExtension(url);
MessageBox.Show(this, ext);

result: ".jpg?par=x"