Hello Gajender,

To enable Copy and Paste support for the XamGrid, you can start by setting the control’s ClipboardSettings ( AllowCopy and AllowPaste properties) to true.
Eg.
http://help.infragistics.com/Help/Doc/Silverlight/2016.1/CLR4.0/html/xamGrid_Enable_Copy_and_Paste_Support.html

In XAML:
<ig:XamGrid x:Name="xamGrid" … >
    <ig:XamGrid.ClipboardSettings>
        <ig:ClipboardSettings AllowCopy="True" AllowPaste="True"/>
    </ig:XamGrid.ClipboardSettings>
</ig:XamGrid>

In Visual Basic:
xamGrid.ClipboardSettings.AllowCopy = True
xamGrid.ClipboardSettings.AllowPaste = True

In C#:
xamGrid.ClipboardSettings.AllowCopy = true;
xamGrid.ClipboardSettings.AllowPaste = true;

In Silverlight, you’ll receive an alert for permission when the clipboard is accessed for the first time.
I’ve attached a sample where I’ve tested that hierarchical data is fully supported.

Let me know if you have any questions regarding this matter.