private void BtnDeleteIncomeCategory_Click(object sender, EventArgs e) { if (DBMethods.TypeOfIncomeCategoryExists(listIncomeCategories.Text, UserID)) { DialogResult result = MessageBox.Show("This action will also delete types and incomes of the selected category. Do you wish to continue?", "Confirm Delete", MessageBoxButtons.YesNo); if (result == DialogResult.Yes) { DBMethods.DeleteTypesAndIncomesofIncomeCategory(listIncomeCategories.Text, UserID); } else if (result == DialogResult.No) { return; } } DBMethods.DeleteIncomeCategory(listIncomeCategories.Text, UserID); UpdateCategoryListBoxs(); fm.UpdateUI(); }