private void BtnAdd_Click(object sender, EventArgs e) { /*Add Button code added by Shanice Talan. Validation by Kai Feng. * Create a new Package object then get data from textboxes to be passed as args. */ Packages pkg = new Packages(); try { if (Validator.IsPresent(pkgNameTextBox) && Validator.IsPresent(pkgDescTextBox)) { if (pkgEndDateDateTimePicker.Value.Date.CompareTo(pkgStartDateDateTimePicker.Value.Date) <= 0) { MessageBox.Show("Start Date must be less than End Date", "Date Selection Error", MessageBoxButtons.OK); } else { pkg.PackageID = Convert.ToInt32(packageIdTextBox.Text); pkg.PkgName = pkgNameTextBox.Text; pkg.PkgStartDate = pkgStartDateDateTimePicker.Value; pkg.PkgEndDate = pkgEndDateDateTimePicker.Value; pkg.PkgDesc = pkgDescTextBox.Text; Decimal.TryParse(pkgBasePriceTextBox.Text, out decimal baseprice); Decimal.TryParse(pkgAgencyCommissionTextBox.Text, out decimal commision); if (baseprice < commision) { MessageBox.Show("Commission can not be larger than Base Price!"); } else { pkg.PkgBasePrice = baseprice; pkg.PkgAgencyCommission = commision; } PackagesDB.PackageAdd(pkg); } } else { MessageBox.Show("Please enter Package Name and Description."); } } catch (Exception ex) { MessageBox.Show(ex.Message); } }