| <GroupByExpressions> |
| <telerik:GridGroupByExpression> |
| <GroupByFields> |
| <telerik:GridGroupByField FieldName="headerdate" FormatString="{0:dd-MMM-yy}" HeaderText=" " HeaderValueSeparator=" " SortOrder="Descending" /> |
| </GroupByFields> |
| <SelectFields> |
| <telerik:GridGroupByField FieldName="headerdate" HeaderText=" " FormatString="{0:dd-MMM-yy}" HeaderValueSeparator=" "/> |
| </SelectFields> |
| </telerik:GridGroupByExpression> |
| </GroupByExpressions> |
and it wont change to {0:dd-MMM-yy} or any time format
formatstring for YYYYMMDDT000000Z wont accept from the field