private void CmdPreview_Click(object sender, RoutedEventArgs e)
{
List <PreviewRowItem> previewRowItems = getPreviewRowItems();
PreviewChangesViewModel previewVM = new PreviewChangesViewModel(_columnName, _selectionColumnName, previewRowItems);
PreviewChanges previewWindow = new PreviewChanges(previewVM);
previewWindow.ShowDialog();
}
public PreviewChanges(PreviewChangesViewModel pcv)
{
DataContext = pcv;
InitializeComponent();
}