如何使用WPF从XML文件创建treeview？
如何使用WPF从XML文件创建treeview？
提问于 2010-02-19 16:21:16
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>因此，我想在WPF中创建一个treeview，如下所示
-Root
--DeltaTestBaclup
---App
----Source
----Publish
---Db
----Dev
----Build所以请帮我创建这个树形视图。
回答 4
Stack Overflow用户
发布于 2010-02-19 22:18:22
这里有一种通过编程实现的方法。这是基于this website's solution的
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>Stack Overflow用户
发布于 2014-03-25 00:02:27
class Mapper
{
private string sourceXmlFile;
private XDocument xmlData;
public Mapper(string xmlFilePath)
{
sourceXmlFile = xmlFilePath;
}
private void BuildNodes(TreeViewItem treeNode, XElement element)
{
string attributes = "";
if (element.HasAttributes)
{
foreach (var att in element.Attributes())
{
attributes += " " + att.Name + " = " + att.Value;
}
}
TreeViewItem childTreeNode = new TreeViewItem
{
Header = element.Name.LocalName + attributes,
IsExpanded = true
};
if (element.HasElements)
{
foreach (XElement childElement in element.Elements())
{
BuildNodes(childTreeNode, childElement);
}
}
else
{
TreeViewItem childTreeNodeText = new TreeViewItem
{
Header = element.Value,
IsExpanded = true
};
childTreeNode.Items.Add(childTreeNodeText);
}
treeNode.Items.Add(childTreeNode);
}
public void LoadXml(TreeView treeview)
{
try
{
if (sourceXmlFile != null)
{
xmlData = XDocument.Load(sourceXmlFile, LoadOptions.None);
if (xmlData == null)
{
throw new XmlException("Cannot load Xml document from file : " + sourceXmlFile);
}
else
{
TreeViewItem treeNode = new TreeViewItem
{
Header = sourceXmlFile,
IsExpanded = true
};
BuildNodes(treeNode, xmlData.Root);
treeview.Items.Add(treeNode);
}
}
else
{
throw new IOException("Xml file is not set correctly.");
}
}
catch (IOException ioex)
{
//log
}
catch (XmlException xmlex)
{
//log
}
catch (Exception ex)
{
//log
}
}
}这是每种xml结构的最通用版本。例如：
<Catalog>
<Book id="bk101">
<Author>Garcia, Debra</Author>
<Title id="33">XML Developer's Guide</Title>
<Genre>Computer</Genre>
<Price>44.95</Price>
<PublishDate>2000-10-01</PublishDate>
<Description>An in-depth look at creating applications
with XML.</Description>
</Book>
<Book id="bk102">
<Author>Garcia, Debra</Author>
<Title>Midnight Rain</Title>
<Genre>Fantasy</Genre>
<Price>5.95</Price>
<PublishDate>2000-12-16</PublishDate>
<Description>A former architect battles corporate zombies,
an evil sorceress, and her own childhood to become queen
of the world.</Description>
</Book>
</Catalog>将产生这样的结果：
Stack Overflow用户
发布于 2010-02-19 17:43:44
欢迎来到stackoverflow，如果你能发布一些示例xml -它将有助于可视化你的工作目标。我认为你需要使用1个或更多的HierarchicalDataTemplate。
假设有一个名为data.xml的xml文件：
<?xml version="1.0" encoding="utf-8" ?>
<root>
<item>
<DeltaTestBaclup>aaa</DeltaTestBaclup>
<App>bbb</App>
<Source>ccc</Source>
<Publish>ddd</Publish>
</item>
<item>
<DeltaTestBaclup>aaa</DeltaTestBaclup>
<App>bbb</App>
<Source>ccc</Source>
<Publish>ddd</Publish>
</item>
</root>您可以使用类似以下内容的xaml：
<Grid>
<Grid.DataContext>
<XmlDataProvider Source="data.xml"></XmlDataProvider>
</Grid.DataContext>
<Grid.Resources>
<HierarchicalDataTemplate x:Key="ItemTemplate" DataType="item">
<TextBlock>
<TextBlock Text="{Binding XPath=DeltaTestBaclup}" />
<LineBreak></LineBreak>
<TextBlock Text="{Binding XPath=App}" />
<LineBreak></LineBreak>
<TextBlock Text="{Binding XPath=Source}" />
<LineBreak></LineBreak>
<TextBlock Text="{Binding XPath=Publish}" />
</TextBlock>
</HierarchicalDataTemplate>
</Grid.Resources>
<TreeView Name="treeView"
ItemsSource="{Binding Path=.,XPath=/root/item}"
ItemTemplate="{StaticResource ItemTemplate}">
</TreeView>
</Grid>页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/2294882
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