WPF Listview ヘッダーをクリックしてソートする

<ListView Name="listView1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" >
    <ListView.View>
        <GridView>
            <GridViewColumn DisplayMemberBinding="{Binding Data1}">
                <GridViewColumnHeader Content="Data1" Click="GridViewColumnHeader_Click" />
            </GridViewColumn>
            <GridViewColumn DisplayMemberBinding="{Binding Data2}">
                <GridViewColumnHeader Content="Data2" Click="GridViewColumnHeader_Click" />
            </GridViewColumn>
            <GridViewColumn DisplayMemberBinding="{Binding Data3}">
                <GridViewColumnHeader Content="Data3" Click="GridViewColumnHeader_Click" />
            </GridViewColumn>
            <GridViewColumn DisplayMemberBinding="{Binding Data4}">
                <GridViewColumnHeader Content="Data4" Click="GridViewColumnHeader_Click" />
            </GridViewColumn>
            <GridViewColumn DisplayMemberBinding="{Binding Data5}">
                <GridViewColumnHeader Content="Data5" Click="GridViewColumnHeader_Click" />
            </GridViewColumn>
        </GridView>
    </ListView.View>
</ListView>
 

private void GridViewColumnHeader_Click(object sender, RoutedEventArgs e)
{
    // ヘッダー名から列名を取得
    GridViewColumnHeader columnHeader = (GridViewColumnHeader)sender;
    string columnName = (string)columnHeader.Content;

    // ListViewのSortDescriptionsを取得
    SortDescriptionCollection sortDescriptionCollection = listView1.Items.SortDescriptions;

    if (listView1.Items.Count > 1)
    {
        ListSortDirection sortDirection;

        if (sortDescriptionCollection.Count > 0
            && sortDescriptionCollection.First().PropertyName == columnName
            && sortDescriptionCollection.First().Direction == ListSortDirection.Ascending)
        {
            sortDirection = ListSortDirection.Descending;
        }
        else
            sortDirection = ListSortDirection.Ascending;

        // 履歴をクリア
        sortDescriptionCollection.Clear();

        sortDescriptionCollection.Add(new SortDescription(columnName, sortDirection));
    }
}
 

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    int seed = Environment.TickCount;

    for (int i = 0; i < 10; i++)
    {
        Random random = new Random(seed++); // 乱数

        SampleData sampleData = new SampleData()
        {
            Data1 = random.Next(5),
            Data2 = random.Next(5),
            Data3 = random.Next(5),
            Data4 = random.Next(5),
            Data5 = random.Next(5)
        };
        List1.Add(sampleData);
    }

    listView1.ItemsSource = List1;
}
 

public class SampleData
{
    public int Data1 { get; set; }
    public int Data2 { get; set; }
    public int Data3 { get; set; }
    public int Data4 { get; set; }
    public int Data5 { get; set; }
}
 

<ListView ItemsSource="{Binding items}" GridViewColumnHeader.Click="listHeader_Click">

 

private void listHeader_Click(object sender, RoutedEventArgs e)
{
    string header = (string)((GridViewColumnHeader)e.OriginalSource).Content;
}