protected override void OnColumnSortInfoCollectionChanged(CollectionChangeEventArgs e)
{
base.OnColumnSortInfoCollectionChanged(e);
GridColumn col = Columns[fsFieldName];
if (col == null)
{
return;
}
if (col.SortIndex != 0)
{
SortInfo.BeginUpdate();
try {
if (Columns[fsFieldName].SortIndex > 0)
{
SortInfo.RemoveAt(Columns[fsFieldName].SortIndex);
}
SortInfo.Insert(0, new GridColumnSortInfo(Columns[fsFieldName], ColumnSortOrder.Ascending));
} finally { SortInfo.EndUpdate(); }
}
}