Wpf datagrid. How to merge or group cells ..?

Question

I am trying to merge cells in a datagrid WPF toolkit. I am trying to do something as shown in the image below. We can do this in the Winforms datagrid. But how to do this using the WPF toolkit datagrid? .Or are there any alternative controls ..?

Can we do this using listview or listbox ..? Or are there any available controls available that have this functionality?