System.Web.HttpResponse.AddHeader C# (CSharp) Method

		public void AddHeader (string name, string value)
		{
			AppendHeader (name, value);
		}

 public static bool DownFile(HttpRequest _Request, HttpResponse _Response, string _fileName, string _fullPath, long _speed)
 {
     try
     {
         FileStream input = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
         BinaryReader reader = new BinaryReader(input);
         try
         {
             _Response.AddHeader("Accept-Ranges", "bytes");
             _Response.Buffer = false;
             long length = input.Length;
             long num2 = 0L;
             int count = 0x2800;
             double d = ((long) (0x3e8 * count)) / _speed;
             int millisecondsTimeout = ((int) Math.Floor(d)) + 1;
             if (_Request.Headers["Range"] != null)
             {
                 _Response.StatusCode = 0xce;
                 num2 = Convert.ToInt64(_Request.Headers["Range"].Split(new char[] { '=', '-' })[1]);
             }
             _Response.AddHeader("Content-Length", (length - num2).ToString());
             if (num2 != 0L)
             {
                 _Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", num2, length - 1L, length));
             }
             _Response.AddHeader("Connection", "Keep-Alive");
             _Response.ContentType = "application/octet-stream";
             _Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(_fileName, Encoding.UTF8));
             reader.BaseStream.Seek(num2, SeekOrigin.Begin);
             double num6 = (length - num2) / ((long) count);
             int num7 = ((int) Math.Floor(num6)) + 1;
             for (int i = 0; i < num7; i++)
             {
                 if (_Response.IsClientConnected)
                 {
                     _Response.BinaryWrite(reader.ReadBytes(count));
                     Thread.Sleep(millisecondsTimeout);
                 }
                 else
                 {
                     i = num7;
                 }
             }
         }
         catch
         {
             return false;
         }
         finally
         {
             reader.Close();
             input.Close();
         }
     }
     catch
     {
         return false;
     }
     return true;
 }