public void Button5_Click(object sender, EventArgs e) { AdminDataManager ADMgr = new AdminDataManager(); int itineraryID = -1; bool doit = true; int returnresult = -1; try { itineraryID = Int32.Parse(this.TextBox12.Text); if (itineraryID < 1) { doit = false; } } catch (Exception) { doit = false; } if (doit) { returnresult = ADMgr.deleteItinerary(itineraryID); DataTable dt = ADMgr.getItinerary(); GridView2.DataSource = dt; GridView2.DataBind(); if (returnresult < 1) { this.TextBox15.Text = "Failure to delete. Please try again."; } else { this.TextBox15.Text = "Deleted successfully."; } } else { this.TextBox15.Text = "Error Encountered. Please try again."; } }