protected void btnSubmit_Click(object sender, EventArgs e)
 {
     try
     {
         objAdmin.CityId             = Convert.ToInt32(ddlCity.SelectedItem.Value.ToString());
         objAdmin.UserId             = Convert.ToInt32(ddlAgencyName.SelectedItem.Value.ToString());
         objAdmin.AgencyName         = ddlAgencyName.SelectedItem.Text;
         objAdmin.AvailableCylinders = Convert.ToInt32(txtAvailableCylinders.Text);
         objAdmin.TotalCylinders     = Convert.ToInt32(txtTotalCylinders.Text);
         string s = objAdmin.AddCylinderDetails();
         lblMsg.Text = s;
     }
     catch (Exception ex)
     {
         lblMsg.Text = ex.Message.ToString();
     }
 }