protected void btnCreate_Click(object sender, EventArgs e) { try { NetworkCredential NetCredentials = new NetworkCredential(); NetCredentials.UserName = SessionManager.GetNAVUserName(HttpContext.Current); NetCredentials.Password = SessionManager.GetNAVUserPassword(HttpContext.Current); Web_Order_Mail objser = new Web_Order_Mail(); objser.UseDefaultCredentials = true; objser.Credentials = NetCredentials; no = objser.CreateReleasedProductionOrder(drpItem.SelectedItem.Value, Convert.ToString(Session["NavUserName"])); objser = null; lblItemNo.Text = drpItem.SelectedItem.Value; lblItemDescription.Text = drpItem.SelectedItem.Text; lblItemNo.Visible = false; lblNo.Text = no; pnlHide.Visible = false; pnlShow.Visible = true; tblID.Visible = true; txtPostingDate.Focus(); } catch (Exception ex) { var message1 = new JavaScriptSerializer().Serialize(ex.Message.ToString()); var script1 = string.Format("alert({0});", message1); ScriptManager.RegisterClientScriptBlock(Page, Page.GetType(), "", script1, true); } }