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GroupByExpressions is empty at the first time

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Grid
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Doraemon
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Doraemon asked on 19 Sep 2013, 08:02 AM
Hi all,

I use a header context menu to group or ungroup my records in a grid
http://www.telerik.com/help/aspnet-ajax/grid-header-context-menu.html

and I use GroupByExpressions to order by my records.

When I click GroupBy menu at the first time, in event MyRadGrid_NeedDataSource, I get GroupByExpressions by doing the following codes:
MyRadGrid.MasterTableView.GroupByExpressions. But at this time, GroupByExpresssions is empty. I expected that this time there is a record
of GroupByExpresssions.

When I click GroupBy menu again, At this time, GroupByExpressions has one record.???

So my questions are
- Can I get GroupByExpressions when I click on GroupBy menu at the first time ? and How ?
- If Not, Is there any way to workaround this issue ?

Thanks.

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APESTANA
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answered on 20 Sep 2013, 12:58 PM
Hi,
I also have  this problem.
Looking for a solution...
Thanks.

0
Eyup
Telerik team
answered on 24 Sep 2013, 09:04 AM
Hi,

Generally, it is not a good practice to implement any logic in the NeedDataSource event except datasource acquiring. You can use the following event to handle the grouping operation of the grid:
protected void RadGrid1_GroupsChanging(object sender, GridGroupsChangingEventArgs e)
{
    string expression = e.Expression.Expression;
}

Hope this helps. Please give it a try and let me know if it works for you.

Regards,
Eyup
Telerik
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Doraemon
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APESTANA
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Eyup
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