Hello, I am using Model View ViewModel pattern. I have a button inside a DataCell of Xceed DataGrid. I want to use DelegateCommand to handle the click event of the button. Also, I dont want to write anything for the same in my Code Behind. I want everything to reside in my ViewModel. How can this be achieved. I thought of RoutedEvents / ...

I have create DataGrid that contain ComboBox. I want user can select value to combobox. every thing work correctly except when i select value in combobox it don't update it value to datagrid (at first that column is null). I want to know how to solve this problem.  Thanks!