private async void saveButton_Click(object sender, RoutedEventArgs e) { val = new Validation(); if (val.isEmpty(location) || val.isEmpty(addressLine1) || val.isEmpty(addressLine2) || val.isEmpty(mobileNumber.ToString()) || val.isEmpty(fixedNumber.ToString())) { await this.ShowMessageAsync("Error", "Data Cannot be Empty", MessageDialogStyle.Affirmative); } else if (val.isNumeric(mobileNumber.ToString()) || val.isNumeric(fixedNumber.ToString())) { await this.ShowMessageAsync("Error", "Contact Numbers Should be Numeric", MessageDialogStyle.Affirmative); } else { int affectedLines = 0; salesCenter.Location = Location.Text; salesCenter.FixedNumber = Convert.ToInt32(FixedLine.Text); salesCenter.Mobile = Convert.ToInt32(Mobile.Text); salesCenter.Address = Address1.Text + ' ' + Address2.Text + ' ' + Address3.Text; try { handleDatabase = new HandleDatabase(); affectedLines = handleDatabase.executeSalesCenetrEntry(salesCenter); if (affectedLines > 0) { await this.ShowMessageAsync("Successfull", "New Sales Center have been Successfully Entered", MessageDialogStyle.Affirmative); Location.Text = ""; FixedLine.Text = ""; Mobile.Text = ""; Address1.Text = ""; Address2.Text = ""; Address3.Text = ""; } else { await this.ShowMessageAsync("Error", "Sorry Can not add, Please Try again", MessageDialogStyle.Affirmative); } } catch (SqlException sqlException) { Console.WriteLine(sqlException); } } }