ItemsSource ObjectDataProvider 数据绑定与更新

<UserControl x:Class="Newauto.BSEditController.LeftTreeView"
    <DockPanel Name="dockPanel">
        <DockPanel.Resources>
                <ObjectDataProvider  x:Key="MyList" ObjectInstance="_this.DataContext"   />

            <HierarchicalDataTemplate DataType    = "{x:Type BSEditController:StationInfoMode}"
                                ItemsSource = "{Binding Path=AgentInfoModes}">
                <TextBlock Text="{Binding Path=Name}"/>
            </HierarchicalDataTemplate>

            <HierarchicalDataTemplate DataType    = "{x:Type BSEditController:AgentInfoMode}">  
                <TextBlock Text="{Binding Path=Name}"/>
            </HierarchicalDataTemplate>
        </DockPanel.Resources>
        <TreeView Name="treeViewMyList" SelectedItemChanged="TreeView_SelectedItemChanged">
            <TreeViewItem Name="treeviewItem"  ItemsSource="{Binding Source={StaticResource MyList}}" Header="HeaderShow"  />
        </TreeView>
            <Button Content="Button" Height="23" Name="button1" Width="75" Click="button1_Click_1" />
        </DockPanel>

 

后台更新

private void button1_Click_1(object sender, RoutedEventArgs e)
        {

            this.DataContext = new StationInfoModes();
            ObjectDataProvider provider = dockPanel.FindResource("MyList") as ObjectDataProvider;
         
            if (provider != null)
            {
                provider.ObjectInstance = new StationInfoModes();
            }  

        }

<UserControl.Resources>

    <ObjectDataProvider x:Key="dataProvider"

                       ObjectType="loc:FileSystemObjectViewModel"

                       MethodName="GetSystemDrives"/>

 

    <loc:IconConverter x:Key="iconConverter" />

 

</UserControl.Resources>

<TreeView VirtualizingStackPanel.IsVirtualizing="True"

         VirtualizingStackPanel.VirtualizationMode="Recycling"

         DataContext="{Binding Source={StaticResource dataProvider}}"

         ItemsSource="{Binding Children}">

 

    <TreeView.ItemTemplate>

        <HierarchicalDataTemplate DataType="loc:FileSystemObjectViewModel"

                                 ItemsSource="{Binding Children}">

 

            <StackPanel Orientation="Horizontal">

                <Image Source="{Binding Converter={StaticResource iconConverter}}" />

                <TextBlock Text="{Binding DisplayName}" />

            </StackPanel>

 

        </HierarchicalDataTemplate>

    </TreeView.ItemTemplate>

 

    <TreeView.ItemContainerStyle>

        <Style TargetType="TreeViewItem">

            <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" />

        </Style>

    </TreeView.ItemContainerStyle>

 

</TreeView>