private void button4_Click(object sender, EventArgs e) { Price_UserDB price_UserDB = new Price_UserDB(); int a = price_UserDB.delete(comboBox4.Text, Data.User.ID1); if (a == 1) { MessageBox.Show("删除成功!", "提示", MessageBoxButtons.OK); BiaoJia_Load(sender, e); comboBox4.SelectedIndex = 0; } else { MessageBox.Show("删除失败!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error); } }