I'm using the WPF Toolkit Datagrid and have one column which is a DataGridCheckBoxColumn bound to a bool property on my ViewModel.

My problem is that I wan't the property to get it's value updated immediately when the user checks or unchecks the checkbox. 

Now you have to navigate away from the cell in order to have the property updated. It's a checkbox. It can't be in the middle of editing like a textbox can.