Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. The statement has been terminated.

protected void SaveAttachements(Int64 noticeDetailID)
  {
      try
      {
          if (gvAttachments.Rows.Count > 0)
          {
              String Sql = string.Empty;
              if ((Session["FileDetail"].ToString() !=""))
              {
                  string[] Records = Session["FileDetail"].ToString().Split('#');
                  for (int i = 0; i < Records.Length; i++)
                  {
                      string[] arrRecords = Records[i].Split(',');
                      cmd = new SqlCommand();
                      cmd.CommandText = "select File_Name,File_Format,File_Content from Temporary_Attachment Where File_ID='" + arrRecords[1] + "'";
                      cmd.CommandType = CommandType.Text;
                      cmd.Connection = con;
                      SqlDataReader dr = cmd.ExecuteReader();
                      while (dr.Read())
                      {

                          cmd = new SqlCommand();
                          Sql = "Insert  into Notice_Attachment(File_Name,File_Format,File_Content,Notice_Detail_ID) values ('" + dr["File_Name"].ToString() + "','" + dr["File_Format"].ToString() + "',(Select top(1) File_Content from Temporary_Attachment Where File_ID='" + arrRecords[1] + "')," + noticeDetailID + ")";
                          cmd.CommandText = Sql;
                          cmd.CommandType = CommandType.Text;
                          cmd.Connection = con;
                          cmd.ExecuteNonQuery();
                          Sql = "Delete from Temporary_Attachment Where File_ID='" + arrRecords[1] + "'";
                          cmd.CommandText = Sql;
                          cmd.CommandType = CommandType.Text;
                          cmd.Connection = con;
                          cmd.ExecuteNonQuery();

                      }
                  }
              }
          }
      }
      catch (Exception ex)
      {

      }
  }