GridView - How to save and restore layout data

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C#

DevExpress

I create my own class, and inherit from TableView.

public class ABGridView : TableView
{
in this class I save current layout like this

string fileName = @"D:\aa.xml";
this.Grid.SaveLayoutToXml(fileName);
and it's work, but when I'm trying to restore layout it doesn't work.

private void ABGridView_Loaded(object sender, RoutedEventArgs e)
{
string fileName = @"D:\aa.xml";
this.Grid.RestoreLayoutFromXml(fileName);
}

So I need your helps friends. I can't understand why it doesn't work...
Thanks ...