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  <telerik:RadDataGrid x:Name="dataGrid"
                         ItemsSource="{Binding People}">
        <telerik:RadDataGrid.GroupHeaderTemplate>

              <telerik:RadTreeView x:Name="treeView" 
                         ItemsSource="{Binding Items}" 
                         CheckBoxMode="Recursive">
        <telerik:TreeViewDescriptor DisplayMemberPath="Name"
                                    ItemsSourcePath="Children"
                                    TargetType="{x:Type local:Item}" />
        <telerik:RadTreeView.BindingContext>
            <local:ViewModel/>
        </telerik:RadTreeView.BindingContext>
    </telerik:RadTreeView>


        </telerik:RadDataGrid.GroupHeaderTemplate>        
    </telerik:RadDataGrid>

 

 

 public class Item
    {
        public Item(string name)
        {
            this.Name = name;
            this.Children = new ObservableCollection<Item>();
        }

        public string Name { get; set; }
        public IList<Item> Children { get; set; }
    }        

 

 

 

public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
    public Gender Gender { get; set; }
}
Lance | Senior Manager Technical Support
Telerik team
 answered on 10 Jul 2023
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