void ShowData()
{
LV.Where("GroupID=" + (LB.SelectedValue == null ? "0" : LB.SelectedValue));
LV.ShowData(true);
table = LV.DataTable;
ToAdd();
LV.Focus();
}
void DefineView()
{
LV = new MyListViewA(listView1);
LV.SetDB(Global.con, "Labels");
LV.ColumnWidths = new int[] { 0, 0, 0, 230, 65 };//列宽（默认80）
LV.RowHeight = 30;
LV.RowColor = Color.LightGray;
LV.SetStyle("Cambria", 16, FontStyle.Bold);
LV.QueryFields = "LabelID,GroupID,Path,LabelName as 标签名,LabelOrder as 序号";
LV.Where("GroupID=" + GroupID);
LV.OrderBy("LabelOrder");
ShowData();
}