<xcad:LayoutDocument x:Name="Name" CanClose="False"> <l:CustomDataGrid x:Name="dataGridName"/> <l:CustomDataGrid.Columns/> </xcad:LayoutDocument>
it is necessary to make it possible to deploy in the form of a tree, as in the screenshot. 
at the same time it is necessary to change the field. Is it possible to do this using what is or is it necessary to do a new widget?