public static void DownloadFile(int fileId)
{
FileModel file = DirectoryData.GetFileFromId(fileId);
string basePath = @"~\corpus";
if (file == null)
{
return;
}
Debug.WriteLine("ZZ" + fileId);
string filePath = basePath + "\\" + file.Folder + "\\" + file.Name;
filePath = HttpContext.Current.Server.MapPath(filePath);
if (!System.IO.File.Exists(filePath))
{
return;
}
System.IO.Stream oStream = null;
try
{
oStream =
new System.IO.FileStream
(path: filePath,
mode: System.IO.FileMode.Open,
share: System.IO.FileShare.Read,
access: System.IO.FileAccess.Read);
long lngFileLength = oStream.Length;
HttpContext.Current.Response.Buffer = false;
HttpContext.Current.Response.ContentType = "application/octet-stream";
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
long lngDataToRead = lngFileLength;
int count = 0;
while (lngDataToRead > 0)
{
Debug.WriteLine((++count) + " ");
if (HttpContext.Current.Response.IsClientConnected)
{
int intBufferSize = 8 * 1024;
byte[] bytBuffers =
new System.Byte[intBufferSize];
int intTheBytesThatReallyHasBeenReadFromTheStream =
oStream.Read(buffer: bytBuffers, offset: 0, count: intBufferSize);
HttpContext.Current.Response.OutputStream.Write
(buffer: bytBuffers, offset: 0,
count: intTheBytesThatReallyHasBeenReadFromTheStream);
HttpContext.Current.Response.Flush();
lngDataToRead =
lngDataToRead - intTheBytesThatReallyHasBeenReadFromTheStream;
}
else
{
lngDataToRead = -1;
}
}
}
catch (Exception e) {
Debug.WriteLine(e.Message);
}
finally
{
if (oStream != null)
{
oStream.Close();
oStream.Dispose();
oStream = null;
}
HttpContext.Current.Response.Close();
}
}