Hello Saravanan,

The correct way of expanding a Record is through the Record's IsExpanded property rather than the DataRecordPresenter's IsExpanded property. You can do this in the InitializeRecord and check if e.Record is GroupByRecord and expand it or you can do this in the XamDataGrid's Loaded event. You will not be able to do this correctly using Triggers.

Hope this helps you.

Hi John,

I am looking for the approach to achive this feature in xaml itself, instead of using the codebehind approach.

Thanks in Advance

Yes, if you are referring to Group Expanders as the GroupByRecords. Their visual representation is the GroupByRecordPresenter element, which you can craete a style for and restyle/retemplate it. You can find the default style for this element in the DefaultStyles directory in the Infragistics folder and use this as  a base for your custom style.

This worked. Thanks for your help. On another subject.

Is there a way to customize the Group Expanders? Can I center the text , change the background color etc.,??

Once again, thanks