Set timeout for webClient.DownloadFile()

Question

I'm using webClient.DownloadFile() to download a file can I set a timeout for this so that it won't take so long if it can't access the file?

Answer 1

As far as I know, you can't set timeout on webClient. I'd rather use HttpWebrequest instead.

Answer 2

Try WebClient.DownloadFileAsync(). You can call CancelAsync() by timer with your own timeout.

Answer 3

Have you tried to do this?

using (var oWebClient = new WebClient())
{
  oWebClient.Headers.Add(HttpRequestHeader.KeepAlive, Data.Environment.TtlServerRest);
  result = oWebClient.DownloadFile(param, param);
}

This worked for me using DownloadString method.

Answer 4

My answer comes from here

You can make a derived class, which will set the timeout property of the base WebClient class:

public class WebDownload : WebClient
{
    private int _timeout;
    /// <summary>
    /// Time in milliseconds
    /// </summary>
    public int Timeout
    {
        get
        {
            return _timeout;
        }
        set
        {
            _timeout = value;
        }
    }

    public WebDownload()
    {
        this._timeout = 60000;
    }

    public WebDownload(int timeout)
    {
        this._timeout = timeout;
    }

    protected override WebRequest GetWebRequest(Uri address)
    {
        var result = base.GetWebRequest(address);
        result.Timeout = this._timeout;
        return result;
    }
}

and you can use it just like the base WebClient class.