Fixed bug in when DataGrid.View is null

inabox.wpf/DynamicGrid/DynamicGrid.cs

@@ -1265,7 +1265,7 @@ namespace InABox.DynamicGrid
 
             foreach (var row in dataRows)
             {
-                var record = DataGrid.View.Records.FirstOrDefault(x => (x.Data as DataRowView)!.Row == row);
+                var record = DataGrid.View?.Records.FirstOrDefault(x => (x.Data as DataRowView)!.Row == row);
                 if(record?.Data is DataRowView rowView)
                 {
                     DataGrid.SelectedItems.Add(rowView);