WPF DataGrid horizontal scrollbar not showing

Question

I have created simple DataGrid with 4 columns, which go outside the bounds of DataGrid, and horizontal scrollbar is not showing. I tried setting width to each column but nothing

Answer 1

Set Datagrid's properties as CanUserAddRows="True" IsReadOnly="True" and wrap it with ScrollViewer. CanUserAddRows gives you an empty row. Empty row retains scrollbar. IsReadOnly hides the empty row since it's readonly.

Downside is, when you scroll vertically datagrid headers would be hidden.