I am using the WebDataGrid with the Paging and Selection behaviours.

How can I select all rows by pressing a button? Currently I've tried something like the following:

 // Disable paging so that all rows are accessible from the Rows collection

                    bool paged = Behaviors.Paging != null && Behaviors.Paging.Enabled;
                    if (paged)
                    {
                        Behaviors.Paging.Enabled = false;
                    }

                    // Select all the rows
                    foreach (GridRecord row in Rows)
                    {
                        if (!selection.SelectedRows.Contains(row))
                        {
                            selection.SelectedRows.Add(row);
                        }
                    }

                    // If the grid was previously paged, re-enable the paging
                    if (paged)
                    {
                        Behaviors.Paging.Enabled = true;
                    }

But this doesn't work. Can anyone please offer any assistance?