Question : How do I get a WPF DataGrid to auto refresh when an underlying SQL Server table is updated?

I have been searching for a way to have a WPF DataGrid automatcially refresh itself when new rows are added to a SQL Server table that it represents.  Rows are typically added to the table via other processes and the DataGrid is merely a view into that table.  
Eventually print and delete capabilities will be added to the grid but right now I just need a way to perform the "auto" refresh.  
Storing the records internally is not necessarily a preferred solution as the number of records could get quite large and contain a lot of string data.
Thanks!

Answer : How do I get a WPF DataGrid to auto refresh when an underlying SQL Server table is updated?

have you tried:
MessagesGrid.GetBindingExpression(DataGrid.ItemsSourceProperty).UpdateTarget()