How Get File Name from URL ,C#/.NET?

Question

How can I get a file name if the address ends with something like this.
/download/file/36fdd4aebda3819d329640ce75755657bc0c0d4c6811432b3bb6aac321dc78d/ ?

This is the simplified code example,

void geckoWebBrowser1_Navigating(object sender, GeckoNavigatingEventArgs e)
    {
             if (e.Uri.AbsolutePath.Contains("/file/"))
                {
                      MyUrl = e.Uri.ToString();
                         // and here I tried different codes construstors, methods but I can not get the filename
                }
            if (e.Uri.Segments[e.Uri.Segments.Length - 1].EndsWith(".exe"))
                {
                       // if the address ended with the FileName this code works well
                       Uri u = new Uri(e.Uri.ToString());
                      string filename = Path.GetFileName(ut.LocalPath);
                       MessageBox.Show(fileName);
                }
     }

Damien_The_Unbeliever · Accepted Answer · 2011-09-03 15:16:53Z

3

It doesn't have a "file name", unless there's a Content-Disposition header, including a filename-parm. It might resemble:

Content-Disposition: attachment; filename=FileA.abc

In that case, the file name would be FileA.abc.

I've not really worked with the WebClient class, however, and I don't see any easy way to access the headers. You'd have to switch to using HttpWebRequest, and do more work yourself.

answered Sep 3, 2011 at 15:16

Damien_The_Unbeliever

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DevT · Accepted Answer · 2012-05-31 10:50:57Z

0

Content-Disposition should be as

Content-Disposition: attachment; filename=\"abc.msi\""

in here you want to get abc.msi. for that you can use following code.

            string contentDisposition = resp.Headers["Content-Disposition"];
            string fileName = string.Empty;
            if (!string.IsNullOrEmpty(contentDisposition))
            {
                string lookFor = "filename=";
                int index = contentDisposition.IndexOf(lookFor, StringComparison.CurrentCultureIgnoreCase);
                if (index >= 0)
                    fileName = contentDisposition.Substring(index + lookFor.Length).Replace("\"", ""); ;
            }

edited May 31, 2012 at 10:50

answered May 31, 2012 at 7:03

DevT

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