private void btDelQuantifier_Click(object sender, EventArgs e) { if (MessageBox.Show("是否删除该单位?", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes) { if (db.DeleteQuantifier(int.Parse(lbQuantifier.SelectedValue.ToString())) == -1) { MessageBox.Show("删除失败,该单位已被使用!"); return; } FormSetting_Load(sender, e); } }