我需要在C#中访问用. xaml创建的TreeView的帮助。我正在创建一个简单的TreeView，它将从文档中收集所有“层”，并使用它们的名称和其他属性填充TreeView。作为起点，我只需要名称，然后添加更多属性。
.xaml如下所示：

<Window x:Class="TestWPFAlpha.DocumentStructureWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:TestAlpha"
        mc:Ignorable="d"
        Closing="Window_Closing"
        Title=" Document Structure" Height="600" MinHeight="600" MaxHeight="600" Width="400" MinWidth="400" MaxWidth="400" ScrollViewer.VerticalScrollBarVisibility="Visible">
    <Grid x:Name="gridDocumentStructure" x:FieldModifier="public">
        <Menu Height="25" Margin="0,0,0,0" VerticalAlignment="Top" FontSize="14" Background="#FF3C4B64" Foreground="White">
            <MenuItem Header="Search" />
            <MenuItem Header="Close" Height="25" Click="buttonCloseDocumentStructureWindow_Click"/>
        </Menu>
        <TreeView x:Name="TreeViewDocumentStructure" x:FieldModifier= "public" Background="#FFEBEBEB" Margin="10,35,10,10">
            <TreeView.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding Members}">
                    <TextBlock Text="{Binding Name}"/>
                </HierarchicalDataTemplate>
            </TreeView.ItemTemplate>
        </TreeView>
    </Grid>
</Window>

在C#中，我有：

// all necessary using statements and the two below, that are specific thar I need in this method
using static TestWPFAlpha.DocumentStructureWindow;
using static DocumentLayers.LayerManagerWindow;
...

和按钮事件，如下所示：

public static void DocumentStructure_Click(object sender, RoutedEventArgs e)
{
    if (documentStructureWindow == null)
    {
        documentStructureWindow = new TestWPFAlpha.DocumentStructureWindow();
        documentStructureWindow.Show();
    }
    else
    {
        documentStructureWindow.Activate();
    }
    var tds = new TestWPFAlpha.DocumentStructureWindow.gridDocumentStructure.TreeViewDocumentStructure();
    System.Type canvasType = typeof(System.Windows.Controls.Canvas);
    int count = 0;
    foreach (UIElement uie in TestWPFAlpha.MainWindow.canvasGrid.Children)
    {
        if (uie.GetType() == canvasType && count > 0)
        {
            sb.AppendLine(Layers[count - 1].Name);
            TreeViewItem newChild = new TreeViewItem();
            // Layers are from DocumentLayers.LayerManagerWindow
            newChild.Header = Layers[count - 1].Name;
            tds.Items.Add(newChild);
        }
        count++;
    }
}

在第49行

var tds = new TestWPFAlpha.DocumentStructureWindow.gridDocumentStructure.TreeViewDocumentStructure();

我得到错误：
型别名称'gridDocumentStructure'不存在于型别'DocumentStructureWindow'中
非常感谢您的帮助。