private void button_OnOK_Click(object sender, EventArgs e) { if (this.dataGridView_Query.CurrentRow == null) { this.DialogResult = DialogResult.None; this.label_ErrMessage.Text = "ÇëÑ¡ÔñÒ»Ìõ¼Ç¼£¡"; return; } myClass_MaterialCCSGroup.MaterialCCSGroupAb = this.dataGridView_Query.CurrentRow.Cells["MaterialCCSGroupAb"].Value.ToString(); myClass_MaterialCCSGroup.FillData(); this.DialogResult = DialogResult.OK; this.Close(); }