I'm trying to download file from URL using WebClient, the problem is that the function .DownloadFile() requiring URL, and name that will be given to the saved file, but when we access to the URL it already has the file name.
How can I keep the file name as it is in the URL?
This should work if I understand your question correctly:
private string GetFileNameFromUrl(string url)
{
if(string.IsNullOrEmpty(url))
return "image.jpg"; //or throw an ArgumentException
int sepIndex = url.LastIndexOf("/");
if(sepIndex == -1)
return "image.jpg"; //or throw an ArgumentException
return url.Substring(sepIndex);
}
Then you can use it like so:
string uri = "http://www.mywebsite.com/res/myimage.jpg";
WebClient client = new WebClient();
client.DownloadFile(uri, this.GetFileNameFromUrl(uri));
If you have no control over the url itself you might want to do some validation on it e.g. Regex.
Instead of parsing the url I suggest using function Path.GetFileName():
string uri = "http://yourserveraddress/fileName.txt";
string fileName = System.IO.Path.GetFileName(uri);
WebClient client = new WebClient();
client.DownloadFile(uri, fileName);
What about:
string url = "http://www.mywebsite.com/res/myimage.jpg?guid=2564";
Uri uri = new Uri(url);
string fileName = uri.Segments.Last();
Note: Last() is the extension method from Linq.
