GridView GroupHeader - Cannot regroup a default Header defined through GroupDescriptor

[anoop c]

Hello,

  I have a default group descriptor ColumnA in my gridview. This appears automatically grouped when I load the page. Now if I click on close to remove this group, I am not able to reattach this field again to the group header pane.

All other fields are draggable but when I drag this field it won't allow me to drop in group header pane.

Is this by design? or a bug?

I want the default group to be there but let the user remove and regroup it at will later.

Any quick help is appreciated.

Thanks
Anoop

[Yordanka]

Hello anoop c,

We tried to reproduce your problem but without success. Could you please specify Telerik's controls version and more details about your scenario? Thank you in advance.

Sincerely yours,
Yordanka
the Telerik team

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[anoop c]

Hello Team,

 I am using gridview from Telerik Silverlight controls version 2009.3.1103.1030.

I figured out the problem. I think I missed telling you the important part. I am using a celltemplate for the grouped column.  I have not given the uniquename for the column because I was using the celltemplate. 

Thanks a lot for the support. 

Btw, I want to automatically remove the colum from the grid when it is being grouped. And it should reappear back when the grouping is removed. Any shortcuts?

Thanks
Anoop
 

[Vlad]

Hello,

You can you Grouping or Grouped event to set desired column IsVisible.

Best wishes,
Vlad
the Telerik team

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[anoop c]

Thanks VLad for response.  But I am using ViewModel and not code behind so how do I use those event event?
I need some property in my viewmodel to bind to the visibility of the coloum but then how will this property in viewmodel updated?
Do I need to use an extension here? 

Btw, I am just bumping again into the same old problem which you solved.  I was able to change to the viewmodel in the Grouping Header to a different one by using  DataContext and ElementName="gridView1" approach you mentioned. Now I need to do the same inside the celltemplate of a column. The same approach is not working there. It is by default having the viewmodel defined in the ItemSource property but I want the parent viewmodel. Tried refering to the gridview datacontext but it is returning Null.
I am afraid it is not supported for columns as per silverlight 3.0 design :-(.

Thanks
Anoop