wpf 自定义treeview 如何获得树节点集合

Posted 2023-04-17

参考技术A 给段我改写的代码，编译通过的。
数据类：
public class LeafNode

private string data;

public string Data

get return data;
set data = value;


private List<LeafNode> children;

public List<LeafNode> Children

get return children;
set children = value;


前台代码：
<Window.Resources>
<HierarchicalDataTemplate DataType="x:Type local:LeafNode" ItemsSource="Binding Path=Children">
<TextBlock Text="Binding Path=Data" ToolTip="Binding Path=Data"/>
</HierarchicalDataTemplate>
</Window.Resources>
<Grid>
<TreeView x:Name="twLeaf"/>
<Button Name="btn" Click="btn_Click" HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="5" Width="50" Height="25" Content="click"/>
</Grid>
后台代码：
List<LeafNode> roots = new List<LeafNode>();
List<LeafNode> roots1 = new List<LeafNode>();

public test3()

InitializeComponent();

for (int i = 0; i < 5; i++)

LeafNode child = new LeafNode() Data = "root" + i.ToString() ;
child.Children = new List<LeafNode>();
roots.Add(child);

for (int j = 0; j < 10; j++)

LeafNode subchild = new LeafNode() Data = "son" + j.ToString() ;
subchild.Children = new List<LeafNode>();
child.Children.Add(subchild);

for (int k = 0; k < 15; k++)

LeafNode gs = new LeafNode() Data = "grantSon" + k.ToString() ;
subchild.Children.Add(gs);



twLeaf.ItemsSource = roots;

private void btn_Click(object sender, RoutedEventArgs e)

roots1.Clear();

for (int i = 0; i < twLeaf.Items.Count; i++)

LeafNode rootItem = twLeaf.Items[i] as LeafNode;
if (rootItem != null)

GetTreeviewNodes(null,rootItem);




private void GetTreeviewNodes(LeafNode parentNode, LeafNode twItem)

LeafNode node = new LeafNode()

Data = twItem.Data,
Children = new List<LeafNode>()
;
if (parentNode != null)

parentNode.Children.Add(node);

else

roots1.Add(node);

if (twItem.Children!=null && twItem.Children.Count > 0)

for (int i = 0; i < twItem.Children.Count; i++)

LeafNode item = twItem.Children[i] as LeafNode;
if (null != item)

GetTreeviewNodes(node, item);



else

return;


说明：roots是给treeview赋值的，roots1是通过按钮事件获取treeview节点集合的。

C# treeview 获得选中值

treeview的CheckBoxes属性设为True

多选的,如何获得所选值?

求代码.

public void TreeViewChecked()

IList<string> list = new List<string>();//定义一个泛型集合

TreeNodeCollection nodeList = tvMiaoyin.CheckedNodes;//得到所有选中复选框的节点集合

foreach (TreeNode node in nodeList)//遍历集合，获得被选中节点的值

list.Add(node.Value);

参考技术A public void Getvalue()

String str[]=new ArrayList（）；//定义一个集合
TreeNode List = tvMiaoyin.CheckedNodes;//得到多选框中的值
foreach (TreeNode node in List)//遍历集合，获得被选中节点的值

list.Add(node.Value);

for（int i=0;i<list.size();i++）//测试一下是否得到了所选的值

System.out.print(list.get(i));