Saving images from the web with GetResponseStre am()

[Mattias]

I'm saving pictures on my harddrive from our webcam with GetResponseStre am()
.. Everything works fine, but after approximately 1h identical images are
being saved. I checked the webpage but those pictures are still being
refreshed.

Code snippet:
req = (System.Net.Htt pWebRequest) System.Net.WebR equest.Create(f ullpath);
req.Credentials = System.Net.Cred entialCache.Def aultCredentials ;
// Return request in a response stream
res = (System.Net.Htt pWebResponse) req.GetResponse ();
System.IO.Strea m str = res.GetResponse Stream();
if(str!=null)
{
Image img = Image.FromStrea m(str);
img.Save(fileNa me, System.Drawing. Imaging.ImageFo rmat.Jpeg);
}