private void cbo_QY_SelectedValueChanged(object sender, EventArgs e) { cbo_KW.Properties.Items.Clear(); if (cbo_QY.EditValue.ToString() == "") { cbo_KW.Properties.Items.Add("全部", "", 0); cbo_KW.SelectedIndex = cbo_KW.Properties.Items.Count - 1; } else { commonSub.ImageComboBoxEditBindXCKKW(cbo_QY.EditValue.ToString(), cbo_KW); cbo_KW.Properties.Items.Add("全部", "", 0); cbo_KW.SelectedIndex = cbo_KW.Properties.Items.Count - 1; } }