c# - 防止重新排序第一列

Question

我有一个列表视图，其中包含一个带有网格列的网格视图，我想重新排序除第一列之外的所有列。我怎样才能做到这一点？我也想保存新的列位置。

我的列表视图代码是：

<Style x:Key="myListViewStyle" TargetType="{x:Type ListView}"  x:Shared="False">
        <Setter Property="BorderBrush" Value="RoyalBlue" />
        <Setter Property="Foreground"  Value="Teal" />
        <Setter Property="FontSize" Value="14" />
        <Setter Property="Margin" Value="20, 60, 20, 50" />
        <Setter Property="BorderThickness" Value="4, 4, 4, 4" />
        <Setter Property="ListView.View">
            <Setter.Value>
                <GridView AllowsColumnReorder="True" >
                    <GridView.Columns>
                        <GridViewColumn Header="A/A" Width="30" DisplayMemberBinding="{Binding AA}"></GridViewColumn>
                        <GridViewColumn Header="Price" Width="350" DisplayMemberBinding="{Binding Price}" >
                        </GridViewColumn>
                        <GridViewColumn Header="Shop" Width="200" DisplayMemberBinding="{Binding Shop}" >
                        </GridViewColumn>
                    </GridView.Columns>
                </GridView>
            </Setter.Value>
        </Setter>
    </Style>

我也用这样的代码创建列表视图：

 ListView l1 = new ListView();
 l1.Style = Resources["myListViewStyle"] as Style;

Answer 1

如果它只是您想要保留的第一列，请尝试以下操作：

XAML：

<GridViewColumnHeader x:Name="FirstColumn" MouseMove="PreventDrag">

后面的代码：

public MyWindow()
{
    InitializeComponent();
    (MyListview.View as GridView).Columns.CollectionChanged += ColumnsReordered;
}

private void PreventDrag(object sender, MouseEventArgs e)
{
    if (e.LeftButton == MouseButtonState.Pressed)
        e.Handled = true;
}

private void ColumnsReordered(object sender, NotifyCollectionChangedEventArgs e)
{
    if (e.Action == NotifyCollectionChangedAction.Move)
    {
        var columns = sender as GridViewColumnCollection;
        if (columns != null)
            Dispatcher.BeginInvoke((Action)(() => columns.Move(columns.IndexOf(FirstColumn.Column), 0)));
    }
}