Automatische Anpassung der Breite von GridViewColumns

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private void UpdateListViewColumns(ListView listView)
{
    GridView gridView = listView.View as GridView;

    if (gridView != null)
        foreach (GridViewColumn column in gridView.Columns)
        {
            column.Width = column.ActualWidth;
            column.Width = double.NaN;
        }
}