Mitch Wheat - Treat the cause, not the symptoms!

/// <summary>

/// Download a file from a URL to a local folder on a windows mobile device

/// Note: Don't forget that mobile folders do not start with a drive letter.

/// </summary>

/// <param name="uri">e.g. http://www.someaddress/downloads/</param>

/// <param name="filename">e.g. filetodownload.exe</param>

/// <param name="localFolder">e.g. \temp\</param>

/// <returns></returns>

public static long FromHttp(string uri, string filename, string localFolder)

{

    long totalBytesRead = 0;

    const int blockSize = 4096;

    Byte[] buffer = new Byte[blockSize];

    if (!Directory.Exists(localFolder))

    {

        Directory.CreateDirectory(localFolder);   

    }

    try

    {

        HttpWebRequest httpRequest = 

  (HttpWebRequest)WebRequest.Create(Path.Combine(uri, filename));

        httpRequest.Method = "GET";

        // if the URI doesn't exist, an exception will be thrown here...

        using (HttpWebResponse httpResponse = (HttpWebResponse)httpRequest.GetResponse())

        {

            using (Stream responseStream = httpResponse.GetResponseStream())

            {

                using (FileStream localFileStream = 

   new FileStream(Path.Combine(localFolder, filename), FileMode.Create))

                {

                    int bytesRead;

                    while ((bytesRead = responseStream.Read(buffer, 0, buffer.Length)) > 0)

                    {

                        totalBytesRead += bytesRead;

                        localFileStream.Write(buffer, 0, bytesRead);

                    }

                }

            }

        }

    }

    catch (Exception ex)

    {

        // You might want to handle some specific errors : Just pass on up for now...

        throw;

    }

    return totalBytesRead;

}

Comments welcome.