I am looking for a solution for this problem for days and I can't find any.
I want to download a file from a webserver with a webclient. The download works fine, but I can't get the real filename, which is very important for me.
I read on many homepages, that the filename should be saved in the Content-Disposition-Header. Unfortunately this header of the site is empty. I tried to get it with:
string header_contentDisposition ="";
using (WebClient client = new WebClient())
{
client.OpenRead(link);
header_contentDisposition = client.ResponseHeaders["Content-Disposition"];
MessageBox.Show(header_contentDisposition);
}
There is no information saved inside this header.
If I try to download the file with my Browser (IE, Opera, Chrome) the filename gets shown in the filedialog, so it has to be saved somewhere.
Can you imagine where I can find it?
EDIT: I can't extract it from the URL, because the link is generated by php like
http://www.example.com/download.php?id=10
You can try this:
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
try
{
HttpWebResponse res = (HttpWebResponse)request.GetResponse();
using (Stream rstream = res.GetResponseStream())
{
string fileName = res.Headers["Content-Disposition"] != null ?
res.Headers["Content-Disposition"].Replace("attachment; filename=", "").Replace("\"", "") :
res.Headers["Location"] != null ? Path.GetFileName(res.Headers["Location"]) :
Path.GetFileName(url).Contains('?') || Path.GetFileName(url).Contains('=') ?
Path.GetFileName(res.ResponseUri.ToString()) : defaultFileName;
}
res.Close();
}
catch { }
Tested this on http://upload.p-kratzer.com/index.php?dir=&file=asdfasdfwervdcvvedb and it does return wetter.JPG.