wpf GridView去除右侧空白列

页面

<ListView SizeChanged="ListView_SizeChanged" Loaded="ListView_Loaded" >
    <ListView.View>
        <GridView>
            <GridViewColumn Header="col1" Width="100" />
            <GridViewColumn Header="col1" Width="Auto" />
            <GridViewColumn Header="col1" />
        </GridView>
    </ListView.View>
</ListView>

cs文件

private void ListView_SizeChanged(object sender, SizeChangedEventArgs e)
{
    UpdateColumnsWidth(sender as ListView);
}

private void ListView_Loaded(object sender, RoutedEventArgs e)
{
    UpdateColumnsWidth(sender as ListView);
}

private void UpdateColumnsWidth(ListView listView)
{
    int autoFillColumnIndex = (listView.View as GridView).Columns.Count - 1;
    if (listView.ActualWidth == Double.NaN)
        listView.Measure(new Size(Double.PositiveInfinity, Double.PositiveInfinity));
    double remainingSpace = listView.ActualWidth;
    for (int i = 0; i < (listView.View as GridView).Columns.Count; i++)
        if (i != autoFillColumnIndex)
            remainingSpace -= (listView.View as GridView).Columns[i].ActualWidth;
    (listView.View as GridView).Columns[autoFillColumnIndex].Width = remainingSpace >= 0 ? remainingSpace : 0;
}

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