protected void btnBook_Click(object sender, EventArgs e) { try { objDistributor.UserId = Convert.ToInt32(lblConsumerNo.Text); objDistributor.AgencyName = lblAgencyName.Text; objDistributor.AgentId = Convert.ToInt32(Session["AgentId"]); string s = objDistributor.UserBookGas(); lblMsg.Text = s; } catch (Exception ex) { lblMsg.Text = ex.Message.ToString(); } }