private void checkGroupSummary()
{
innerChange = true;
for (int i = GroupSummary.Count - 1; i >= 0; i--)
{
if (GroupSummary[i].FieldName == ChooseColumnName)
{
GroupSummary.RemoveAt(i);
}
}
GroupSummary.Add(this.GroupChooseNeedSummary);
innerChange = false;
}
