wpf - 如何使用 WPF 从 XML 文件创建 TreeView ？

Question

这是 XML 文件

 <Root>
 <RootNode name="CurrentDbName" value="DeltaTest Backup" DesiPath="E:\BuildBackups">
 <ChildNode name="Application" value="App">
  <LeafNode name="Source" value="Source" SourcePath="E:\Alertv2" /> 
  <LeafNode name="Publish" value="Publish" SourcePath="C:\Alert_Source" /> 
  </ChildNode>
 <ChildNode name="Database" value="DB">
  <LeafNode name="Dev" value="Dev" SourcePath="C:\Kiran3" /> 
  <LeafNode name="Build" value="Build" SourcePath="C:\Kiran4" /> 
  </ChildNode>
  </RootNode>  </Root>

由此，我想在 WPF 中创建一个 TreeView ，看起来像

-Root
 --DeltaTestBaclup
  ---App
    ----Source
    ----Publish
  ---Db
    ----Dev
    ----Build

所以请帮我创建这个 TreeView 。

Answer 1

这是一种以编程方式执行此操作的方法。这是基于this website's solution

public YourWindow()
{
    InitializeComponent();
    BuildTree(treeView, XDocument.Load(System.IO.Path.Combine(System.IO.Directory.GetCurrentDirectory(), @"testxml.xml")));
}

private void BuildTree(TreeView treeView, XDocument doc)
{
    TreeViewItem treeNode = new TreeViewItem 
    {  
        //Should be Root
        Header = doc.Root.Name.LocalName,
        IsExpanded = true
    };
    treeView.Items.Add(treeNode);
    BuildNodes(treeNode, doc.Root);
}

private void BuildNodes(TreeViewItem treeNode, XElement element)
{
    foreach (XNode child in element.Nodes())
    {
        switch (child.NodeType)
        {
            case XmlNodeType.Element:
                XElement childElement = child as XElement;
                TreeViewItem childTreeNode = new TreeViewItem
                {
                    //Get First attribute where it is equal to value
                    Header = childElement.Attributes().First(s => s.Name == "value").Value ,
                    //Automatically expand elements
                    IsExpanded = true
                };
                treeNode.Items.Add(childTreeNode);
                BuildNodes(childTreeNode, childElement);
                break;
            case XmlNodeType.Text:
                XText childText = child as XText;
                treeNode.Items.Add(new TreeViewItem { Header = childText.Value, });
                break;
        }
    }
}

后面的代码将根据您的规范构建树。这是 XAML

<Grid>
    <TreeView Margin="20" Background="LightGray" x:Name="treeView" />
</Grid>