TreeNode 构造函数

参考

定义

命名空间:: System.Web.UI.WebControls

程序集:: System.Web.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

初始化 TreeNode 类的新实例。

重载

TreeNode()	不使用文本或值初始化 TreeNode 类的新实例。
TreeNode(String)	使用指定的文本初始化 TreeNode 类的新实例。
TreeNode(String, String)	使用指定的文本和值初始化 TreeNode 类的新实例。
TreeNode(TreeView, Boolean)	使用指定的所有者初始化 TreeNode 类的新实例。
TreeNode(String, String, String)	使用指定的文本、值和图像 URL 初始化 TreeNode 类的新实例。
TreeNode(String, String, String, String, String)	使用指定的文本、值、图像 URL、导航 URL 和目标初始化 TreeNode 类的新实例。

TreeNode()

不使用文本或值初始化 TreeNode 类的新实例。

public:
 TreeNode();

public TreeNode ();

Public Sub New ()

示例

下面的代码示例演示如何使用此构造函数将节点 TreeView 动态添加到控件。


<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  void Page_Init(Object sender, EventArgs e)
  {
  
    if(!IsPostBack)
    {

      // Add the first tree to the TreeView control.
      CreateTree("Section 1");

      // Add the second tree to the TreeView control.
      CreateTree("Section 2");
    
    }

  }

  void CreateTree(String NodeText)
  {

    // Create the root node using the default constructor.
    TreeNode root = new TreeNode();
    root.Text = NodeText;

    // Use the ChildNodes property of the root TreeNode to add child nodes.
    // Create the node using the constructor that takes the text parameter.
    root.ChildNodes.Add(new TreeNode("Topic 1"));

    // Create the node using the constructor that takes the text and value parameters.
    root.ChildNodes.Add(new TreeNode("Topic 2", "Value 2"));

    // Create the node using the constructor that takes the text, value, 
    // and imageUrl parameters.
    root.ChildNodes.Add(new TreeNode("Topic 3", "Value 3", "Image1.jpg"));

    // Create the node using the constructor that takes the text, value, 
    // imageUrl, navigateUrl, and target parameters.
    root.ChildNodes.Add(new TreeNode("Topic 4", "Value 4", "Image1.jpg", "http://www.microsoft.com", "_blank"));

    // Add the root node to the Nodes collection of the TreeView control.
    DynamicTreeView.Nodes.Add(root);

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Constructor Example</h3>
      
      <asp:TreeView id="DynamicTreeView"
         EnableClientScript="false"
         ExpandDepth="2" 
         runat="server">
        
      </asp:TreeView>

    </form>
  </body>
</html>


<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)

    If Not IsPostBack Then

      ' Add the first tree to the TreeView control.
      CreateTree("Section 1")

      ' Add the second tree to the TreeView control.
      CreateTree("Section 2")

    End If

  End Sub

  Sub CreateTree(ByVal NodeText As String)

    ' Create the root node using the default constructor.
    Dim root As TreeNode = New TreeNode
    root.Text = NodeText

    ' Use the ChildNodes property of the root TreeNode to add child nodes.
    ' Create the node using the constructor that takes the text parameter.
    root.ChildNodes.Add(New TreeNode("Topic 1"))

    ' Create the node using the constructor that takes the text and value parameters.
    root.ChildNodes.Add(New TreeNode("Topic 2", "Value 2"))

    ' Create the node using the constructor that takes the text, value, 
    ' and imageUrl parameters.
    root.ChildNodes.Add(New TreeNode("Topic 3", "Value 3", "Image1.jpg"))

    ' Create the node using the constructor that takes the text, value, 
    ' imageUrl, navigateUrl, and target parameters.
    root.ChildNodes.Add(New TreeNode("Topic 4", "Value 4", "Image1.jpg", "http://www.microsoft.com", "_blank"))

    ' Add the root node to the Nodes collection of the TreeView control.
    DynamicTreeView.Nodes.Add(root)

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Constructor Example</h3>
      
      <asp:TreeView id="DynamicTreeView"
         EnableClientScript="false"
         ExpandDepth="2" 
         runat="server">
        
      </asp:TreeView>

    </form>
  </body>
</html>

注解

使用此构造函数使用默认值初始化类的新实例 TreeNode 。

备注

使用此构造函数时，对象中的所有 TreeNode 属性都设置为其默认值。创建对象后，请务必根据需要设置属性。

另请参阅

适用于

TreeNode(String)

使用指定的文本初始化 TreeNode 类的新实例。

public:
 TreeNode(System::String ^ text);

public TreeNode (string text);

new System.Web.UI.WebControls.TreeNode : string -> System.Web.UI.WebControls.TreeNode

Public Sub New (text As String)

参数

text: String

为 TreeView 控件中的节点显示的文本。

示例

下面的代码示例演示如何使用此构造函数将节点 TreeView 动态添加到控件。


<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  void Page_Init(Object sender, EventArgs e)
  {
  
    if(!IsPostBack)
    {

      // Add the first tree to the TreeView control.
      CreateTree("Section 1");

      // Add the second tree to the TreeView control.
      CreateTree("Section 2");
    
    }

  }

  void CreateTree(String NodeText)
  {

    // Create the root node using the default constructor.
    TreeNode root = new TreeNode();
    root.Text = NodeText;

    // Use the ChildNodes property of the root TreeNode to add child nodes.
    // Create the node using the constructor that takes the text parameter.
    root.ChildNodes.Add(new TreeNode("Topic 1"));

    // Create the node using the constructor that takes the text and value parameters.
    root.ChildNodes.Add(new TreeNode("Topic 2", "Value 2"));

    // Create the node using the constructor that takes the text, value, 
    // and imageUrl parameters.
    root.ChildNodes.Add(new TreeNode("Topic 3", "Value 3", "Image1.jpg"));

    // Create the node using the constructor that takes the text, value, 
    // imageUrl, navigateUrl, and target parameters.
    root.ChildNodes.Add(new TreeNode("Topic 4", "Value 4", "Image1.jpg", "http://www.microsoft.com", "_blank"));

    // Add the root node to the Nodes collection of the TreeView control.
    DynamicTreeView.Nodes.Add(root);

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Constructor Example</h3>
      
      <asp:TreeView id="DynamicTreeView"
         EnableClientScript="false"
         ExpandDepth="2" 
         runat="server">
        
      </asp:TreeView>

    </form>
  </body>
</html>


<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)

    If Not IsPostBack Then

      ' Add the first tree to the TreeView control.
      CreateTree("Section 1")

      ' Add the second tree to the TreeView control.
      CreateTree("Section 2")

    End If

  End Sub

  Sub CreateTree(ByVal NodeText As String)

    ' Create the root node using the default constructor.
    Dim root As TreeNode = New TreeNode
    root.Text = NodeText

    ' Use the ChildNodes property of the root TreeNode to add child nodes.
    ' Create the node using the constructor that takes the text parameter.
    root.ChildNodes.Add(New TreeNode("Topic 1"))

    ' Create the node using the constructor that takes the text and value parameters.
    root.ChildNodes.Add(New TreeNode("Topic 2", "Value 2"))

    ' Create the node using the constructor that takes the text, value, 
    ' and imageUrl parameters.
    root.ChildNodes.Add(New TreeNode("Topic 3", "Value 3", "Image1.jpg"))

    ' Create the node using the constructor that takes the text, value, 
    ' imageUrl, navigateUrl, and target parameters.
    root.ChildNodes.Add(New TreeNode("Topic 4", "Value 4", "Image1.jpg", "http://www.microsoft.com", "_blank"))

    ' Add the root node to the Nodes collection of the TreeView control.
    DynamicTreeView.Nodes.Add(root)

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Constructor Example</h3>
      
      <asp:TreeView id="DynamicTreeView"
         EnableClientScript="false"
         ExpandDepth="2" 
         runat="server">
        
      </asp:TreeView>

    </form>
  </body>
</html>

注解

使用此构造函数使用参数指定的text文本初始化类的新实例TreeNode。

下表显示了实例 TreeNode的初始属性值。

properties	初始值
Text	`text` 参数的值。

另请参阅

适用于

TreeNode(String, String)

使用指定的文本和值初始化 TreeNode 类的新实例。

public:
 TreeNode(System::String ^ text, System::String ^ value);

public TreeNode (string text, string value);

new System.Web.UI.WebControls.TreeNode : string * string -> System.Web.UI.WebControls.TreeNode

Public Sub New (text As String, value As String)

参数

text: String

为 TreeView 控件中的节点显示的文本。

value: String

与节点关联的补充数据，如用于处理回发事件的数据。

示例

下面的代码示例演示如何使用此构造函数将节点 TreeView 动态添加到控件。


<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  void Page_Init(Object sender, EventArgs e)
  {
  
    if(!IsPostBack)
    {

      // Add the first tree to the TreeView control.
      CreateTree("Section 1");

      // Add the second tree to the TreeView control.
      CreateTree("Section 2");
    
    }

  }

  void CreateTree(String NodeText)
  {

    // Create the root node using the default constructor.
    TreeNode root = new TreeNode();
    root.Text = NodeText;

    // Use the ChildNodes property of the root TreeNode to add child nodes.
    // Create the node using the constructor that takes the text parameter.
    root.ChildNodes.Add(new TreeNode("Topic 1"));

    // Create the node using the constructor that takes the text and value parameters.
    root.ChildNodes.Add(new TreeNode("Topic 2", "Value 2"));

    // Create the node using the constructor that takes the text, value, 
    // and imageUrl parameters.
    root.ChildNodes.Add(new TreeNode("Topic 3", "Value 3", "Image1.jpg"));

    // Create the node using the constructor that takes the text, value, 
    // imageUrl, navigateUrl, and target parameters.
    root.ChildNodes.Add(new TreeNode("Topic 4", "Value 4", "Image1.jpg", "http://www.microsoft.com", "_blank"));

    // Add the root node to the Nodes collection of the TreeView control.
    DynamicTreeView.Nodes.Add(root);

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Constructor Example</h3>
      
      <asp:TreeView id="DynamicTreeView"
         EnableClientScript="false"
         ExpandDepth="2" 
         runat="server">
        
      </asp:TreeView>

    </form>
  </body>
</html>


<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)

    If Not IsPostBack Then

      ' Add the first tree to the TreeView control.
      CreateTree("Section 1")

      ' Add the second tree to the TreeView control.
      CreateTree("Section 2")

    End If

  End Sub

  Sub CreateTree(ByVal NodeText As String)

    ' Create the root node using the default constructor.
    Dim root As TreeNode = New TreeNode
    root.Text = NodeText

    ' Use the ChildNodes property of the root TreeNode to add child nodes.
    ' Create the node using the constructor that takes the text parameter.
    root.ChildNodes.Add(New TreeNode("Topic 1"))

    ' Create the node using the constructor that takes the text and value parameters.
    root.ChildNodes.Add(New TreeNode("Topic 2", "Value 2"))

    ' Create the node using the constructor that takes the text, value, 
    ' and imageUrl parameters.
    root.ChildNodes.Add(New TreeNode("Topic 3", "Value 3", "Image1.jpg"))

    ' Create the node using the constructor that takes the text, value, 
    ' imageUrl, navigateUrl, and target parameters.
    root.ChildNodes.Add(New TreeNode("Topic 4", "Value 4", "Image1.jpg", "http://www.microsoft.com", "_blank"))

    ' Add the root node to the Nodes collection of the TreeView control.
    DynamicTreeView.Nodes.Add(root)

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Constructor Example</h3>
      
      <asp:TreeView id="DynamicTreeView"
         EnableClientScript="false"
         ExpandDepth="2" 
         runat="server">
        
      </asp:TreeView>

    </form>
  </body>
</html>

注解

使用此构造函数可分别使用由text和value参数指定的文本和值初始化类的新实例TreeNode。

下表显示了实例 TreeNode的初始属性值。

属性	初始值
Text	`text` 参数的值。
Value	`value` 参数的值。

另请参阅

适用于

TreeNode(TreeView, Boolean)

使用指定的所有者初始化 TreeNode 类的新实例。

protected public:
 TreeNode(System::Web::UI::WebControls::TreeView ^ owner, bool isRoot);

protected internal TreeNode (System.Web.UI.WebControls.TreeView owner, bool isRoot);

new System.Web.UI.WebControls.TreeNode : System.Web.UI.WebControls.TreeView * bool -> System.Web.UI.WebControls.TreeNode

Protected Friend Sub New (owner As TreeView, isRoot As Boolean)

参数

owner: TreeView

TreeView，它将包含新的 TreeNode。

isRoot: Boolean

如果 TreeNode 是根节点，则为 true；否则为 false。

另请参阅

TreeNodeTypes

适用于

TreeNode(String, String, String)

使用指定的文本、值和图像 URL 初始化 TreeNode 类的新实例。

public:
 TreeNode(System::String ^ text, System::String ^ value, System::String ^ imageUrl);

public TreeNode (string text, string value, string imageUrl);

new System.Web.UI.WebControls.TreeNode : string * string * string -> System.Web.UI.WebControls.TreeNode

Public Sub New (text As String, value As String, imageUrl As String)

参数

text: String

为 TreeView 控件中的节点显示的文本。

value: String

与节点关联的补充数据，如用于处理回发事件的数据。

imageUrl: String

节点旁显示的图像的 URL。

示例

下面的代码示例演示如何使用此构造函数将节点 TreeView 动态添加到控件。


<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  void Page_Init(Object sender, EventArgs e)
  {
  
    if(!IsPostBack)
    {

      // Add the first tree to the TreeView control.
      CreateTree("Section 1");

      // Add the second tree to the TreeView control.
      CreateTree("Section 2");
    
    }

  }

  void CreateTree(String NodeText)
  {

    // Create the root node using the default constructor.
    TreeNode root = new TreeNode();
    root.Text = NodeText;

    // Use the ChildNodes property of the root TreeNode to add child nodes.
    // Create the node using the constructor that takes the text parameter.
    root.ChildNodes.Add(new TreeNode("Topic 1"));

    // Create the node using the constructor that takes the text and value parameters.
    root.ChildNodes.Add(new TreeNode("Topic 2", "Value 2"));

    // Create the node using the constructor that takes the text, value, 
    // and imageUrl parameters.
    root.ChildNodes.Add(new TreeNode("Topic 3", "Value 3", "Image1.jpg"));

    // Create the node using the constructor that takes the text, value, 
    // imageUrl, navigateUrl, and target parameters.
    root.ChildNodes.Add(new TreeNode("Topic 4", "Value 4", "Image1.jpg", "http://www.microsoft.com", "_blank"));

    // Add the root node to the Nodes collection of the TreeView control.
    DynamicTreeView.Nodes.Add(root);

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Constructor Example</h3>
      
      <asp:TreeView id="DynamicTreeView"
         EnableClientScript="false"
         ExpandDepth="2" 
         runat="server">
        
      </asp:TreeView>

    </form>
  </body>
</html>


<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)

    If Not IsPostBack Then

      ' Add the first tree to the TreeView control.
      CreateTree("Section 1")

      ' Add the second tree to the TreeView control.
      CreateTree("Section 2")

    End If

  End Sub

  Sub CreateTree(ByVal NodeText As String)

    ' Create the root node using the default constructor.
    Dim root As TreeNode = New TreeNode
    root.Text = NodeText

    ' Use the ChildNodes property of the root TreeNode to add child nodes.
    ' Create the node using the constructor that takes the text parameter.
    root.ChildNodes.Add(New TreeNode("Topic 1"))

    ' Create the node using the constructor that takes the text and value parameters.
    root.ChildNodes.Add(New TreeNode("Topic 2", "Value 2"))

    ' Create the node using the constructor that takes the text, value, 
    ' and imageUrl parameters.
    root.ChildNodes.Add(New TreeNode("Topic 3", "Value 3", "Image1.jpg"))

    ' Create the node using the constructor that takes the text, value, 
    ' imageUrl, navigateUrl, and target parameters.
    root.ChildNodes.Add(New TreeNode("Topic 4", "Value 4", "Image1.jpg", "http://www.microsoft.com", "_blank"))

    ' Add the root node to the Nodes collection of the TreeView control.
    DynamicTreeView.Nodes.Add(root)

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Constructor Example</h3>
      
      <asp:TreeView id="DynamicTreeView"
         EnableClientScript="false"
         ExpandDepth="2" 
         runat="server">
        
      </asp:TreeView>

    </form>
  </body>
</html>

注解

使用此构造函数可分别使用由 text``value 和参数指定的文本、值和imageUrl图像 URL 初始化类的新实例TreeNode。

下表显示了实例 TreeNode的初始属性值。

属性	初始值
Text	`text` 参数的值。
Value	`value` 参数的值。
ImageUrl	`imageUrl` 参数的值。

另请参阅

适用于

TreeNode(String, String, String, String, String)

使用指定的文本、值、图像 URL、导航 URL 和目标初始化 TreeNode 类的新实例。

public:
 TreeNode(System::String ^ text, System::String ^ value, System::String ^ imageUrl, System::String ^ navigateUrl, System::String ^ target);

public TreeNode (string text, string value, string imageUrl, string navigateUrl, string target);

new System.Web.UI.WebControls.TreeNode : string * string * string * string * string -> System.Web.UI.WebControls.TreeNode

Public Sub New (text As String, value As String, imageUrl As String, navigateUrl As String, target As String)

参数

text: String

为 TreeView 控件中的节点显示的文本。

value: String

与节点关联的补充数据，如用于处理回发事件的数据。

imageUrl: String

节点旁显示的图像的 URL。

navigateUrl: String

单击节点时链接到的 URL。

target: String

单击节点时用来显示链接到的网页内容的目标窗口或框架。

示例

下面的代码示例演示如何使用此构造函数将节点 TreeView 动态添加到控件。


<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  void Page_Init(Object sender, EventArgs e)
  {
  
    if(!IsPostBack)
    {

      // Add the first tree to the TreeView control.
      CreateTree("Section 1");

      // Add the second tree to the TreeView control.
      CreateTree("Section 2");
    
    }

  }

  void CreateTree(String NodeText)
  {

    // Create the root node using the default constructor.
    TreeNode root = new TreeNode();
    root.Text = NodeText;

    // Use the ChildNodes property of the root TreeNode to add child nodes.
    // Create the node using the constructor that takes the text parameter.
    root.ChildNodes.Add(new TreeNode("Topic 1"));

    // Create the node using the constructor that takes the text and value parameters.
    root.ChildNodes.Add(new TreeNode("Topic 2", "Value 2"));

    // Create the node using the constructor that takes the text, value, 
    // and imageUrl parameters.
    root.ChildNodes.Add(new TreeNode("Topic 3", "Value 3", "Image1.jpg"));

    // Create the node using the constructor that takes the text, value, 
    // imageUrl, navigateUrl, and target parameters.
    root.ChildNodes.Add(new TreeNode("Topic 4", "Value 4", "Image1.jpg", "http://www.microsoft.com", "_blank"));

    // Add the root node to the Nodes collection of the TreeView control.
    DynamicTreeView.Nodes.Add(root);

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Constructor Example</h3>
      
      <asp:TreeView id="DynamicTreeView"
         EnableClientScript="false"
         ExpandDepth="2" 
         runat="server">
        
      </asp:TreeView>

    </form>
  </body>
</html>


<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)

    If Not IsPostBack Then

      ' Add the first tree to the TreeView control.
      CreateTree("Section 1")

      ' Add the second tree to the TreeView control.
      CreateTree("Section 2")

    End If

  End Sub

  Sub CreateTree(ByVal NodeText As String)

    ' Create the root node using the default constructor.
    Dim root As TreeNode = New TreeNode
    root.Text = NodeText

    ' Use the ChildNodes property of the root TreeNode to add child nodes.
    ' Create the node using the constructor that takes the text parameter.
    root.ChildNodes.Add(New TreeNode("Topic 1"))

    ' Create the node using the constructor that takes the text and value parameters.
    root.ChildNodes.Add(New TreeNode("Topic 2", "Value 2"))

    ' Create the node using the constructor that takes the text, value, 
    ' and imageUrl parameters.
    root.ChildNodes.Add(New TreeNode("Topic 3", "Value 3", "Image1.jpg"))

    ' Create the node using the constructor that takes the text, value, 
    ' imageUrl, navigateUrl, and target parameters.
    root.ChildNodes.Add(New TreeNode("Topic 4", "Value 4", "Image1.jpg", "http://www.microsoft.com", "_blank"))

    ' Add the root node to the Nodes collection of the TreeView control.
    DynamicTreeView.Nodes.Add(root)

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Constructor Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Constructor Example</h3>
      
      <asp:TreeView id="DynamicTreeView"
         EnableClientScript="false"
         ExpandDepth="2" 
         runat="server">
        
      </asp:TreeView>

    </form>
  </body>
</html>

注解

使用此构造函数使用文本、值、图像和导航 URL 初始化类的新实例TreeNode，以及分别由 text、、value、 imageUrl``navigateUrl和target参数指定的显示目标。

下表显示了实例 TreeNode的初始属性值。

属性	初始值
Text	`text` 参数的值。
Value	`value` 参数的值。
ImageUrl	`imageUrl` 参数的值。
NavigateUrl	`navigateUrl` 参数的值。
Target	`target` 参数的值。

另请参阅

适用于

通过

TreeNode 构造函数

定义

重载

TreeNode()

示例

注解

另请参阅

适用于

TreeNode(String)

参数

示例

注解

另请参阅

适用于

TreeNode(String, String)

参数

示例

注解

另请参阅

适用于

TreeNode(TreeView, Boolean)

参数

另请参阅

适用于

TreeNode(String, String, String)

参数

示例

注解

另请参阅

适用于

TreeNode(String, String, String, String, String)

参数

示例

注解

另请参阅

适用于

其他资源