Description Sissi Zhu 2008-09-11 02:45:50 EDT

Description:
Add a group on table, select one column from the dataset as group key, a data item created automatically on the table group header. But if the group key is an expression, there is no data item created on the group header. 

There are some reasons for the behavior:
1. For dataset column group key, it is in the exising column binding list.
2. As for expression group key, the expression is not in the column binding list. 

Two ways to resolve the inconsistency:
1.Add a dynamic text item on the group header if the group key is not in the column binding list.
2.Add a column binding, and add a data item refer to the binding and put it on the group header.

2.3.1.v20080911-0630