Downloading file on client side using absolute path .NET - asp.net

Question

string FilePath = HttpUtility.UrlDecode(Request.QueryString.ToString());
string[] s = FilePath.Split(new char[] { ',' });
string path = s[0];
string FileName = s[1];
String str = HttpContext.Current.Request.Url.AbsolutePath;
System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
response.ClearContent();
response.Clear();
// response.ContentType = "text/plain";
response.AddHeader("Content-Disposition", "attachment; filename=" + FileName+ ";");
response.TransmitFile(path+FileName);
response.Flush();
response.End();
Above is the code in which i get location of audio file from another page . the audio file is located on a remote machine which is accesible using url e.g. http:\servername\audiofiles\filename.wav . response.Transmit and .WriteFile requires virtual path whereas response.Write() does not download file . How can i give the absolute url instead of virtual path to download file

Answer 1

Found the answer my self from another place :
string FilePath = HttpUtility.UrlDecode(Request.QueryString.ToString());
string[] s = FilePath.Split(new char[] { ',' });
string path = s[0];
string FileName = s[1];
int bytesToRead = 10000;
byte[] buffer = new Byte[bytesToRead];
try
{
HttpWebRequest fileReq = (HttpWebRequest)HttpWebRequest.Create(path+FileName);
HttpWebResponse fileResp = (HttpWebResponse)fileReq.GetResponse();
if (fileReq.ContentLength > 0)
fileResp.ContentLength = fileReq.ContentLength;
stream = fileResp.GetResponseStream();
var resp = HttpContext.Current.Response;
resp.ContentType = "application/octet-stream";
resp.AddHeader("Content-Disposition", "attachment; filename=\"" + FileName + "\"");
resp.AddHeader("Content-Length", fileResp.ContentLength.ToString());
int length;
do
{
if (resp.IsClientConnected)
{
// Read data into the buffer.
length = stream.Read(buffer, 0, bytesToRead);
// and write it out to the response's output stream
resp.OutputStream.Write(buffer, 0, length);
resp.Flush();
//Clear the buffer
buffer = new Byte[bytesToRead];
}
else
{
// cancel the download if client has disconnected
length = -1;
}
} while (length > 0); //Repeat until no data is read
}
finally
{
if (stream != null)
{
//Close the input stream
stream.Close();
}
}
}