Bagikan melalui

TreeNode.Depth Properti

Definisi

Ruang nama:
System.Web.UI.WebControls
Rakitan:
System.Web.dll

Mendapatkan kedalaman simpul.

public:
 property int Depth { int get(); };
[System.ComponentModel.Browsable(false)]
public int Depth { get; }
[<System.ComponentModel.Browsable(false)>]
member this.Depth : int
Public ReadOnly Property Depth As Integer

Nilai Properti

Int32

Kedalaman simpul.

Atribut
BrowsableAttribute

Contoh

Contoh kode berikut menunjukkan cara menggunakan Depth properti untuk menentukan kedalaman simpul. Ini menginisialisasi semua simpul dengan kedalaman satu ke status yang dipilih. Agar contoh ini berfungsi dengan benar, Anda harus menyalin data XML sampel di bawah ini ke file bernama Newsgroup.xml.


<%@ 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 Data_Bound(Object sender, TreeNodeEventArgs e)
  {

    // Check the depth of a node as it is being bound to data.
    // Initialize the Checked property to true if the depth is 1.
    if(e.Node.Depth == 1)
    {

      e.Node.Checked = true;

    }
    else
    {

      e.Node.Checked = false;

    }

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Checked Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Checked Example</h3>
    
      <asp:TreeView id="NewsgroupTreeView" 
        DataSourceID="NewsgroupXmlDataSource"
        OnTreeNodeDataBound="Data_Bound"
        ShowCheckBoxes="All"
        ExpandDepth="2"  
        runat="server">
         
        <DataBindings>
          <asp:TreeNodeBinding DataMember="category" TextField="Name"/>
          <asp:TreeNodeBinding DataMember="group" TextField="Name"/>
        </DataBindings>
         
      </asp:TreeView>
      
      <asp:XmlDataSource id="NewsgroupXmlDataSource"  
        DataFile="Newsgroup.xml"
        runat="server">
      </asp:XmlDataSource>
    
    </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 Data_Bound(ByVal sender As Object, ByVal e As TreeNodeEventArgs)

    ' Check the depth of a node as it is being bound to data.
    ' Initialize the Checked property to true if the depth is 1.
    If e.Node.Depth = 1 Then

      e.Node.Checked = True

    Else

      e.Node.Checked = False

    End If

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNode Checked Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNode Checked Example</h3>
    
      <asp:TreeView id="NewsgroupTreeView" 
        DataSourceID="NewsgroupXmlDataSource"
        OnTreeNodeDataBound="Data_Bound"
        ShowCheckBoxes="All"
        ExpandDepth="2"  
        runat="server">
         
        <DataBindings>
          <asp:TreeNodeBinding DataMember="category" TextField="Name"/>
          <asp:TreeNodeBinding DataMember="group" TextField="Name"/>
        </DataBindings>
         
      </asp:TreeView>
      
      <asp:XmlDataSource id="NewsgroupXmlDataSource"  
        DataFile="Newsgroup.xml"
        runat="server">
      </asp:XmlDataSource>
    
    </form>
  </body>
</html>

Kode berikut adalah contoh data XML untuk contoh sebelumnya.

<category name="news.microsoft.com">
    <group name="microsoft.public.dotnet.framework.aspnet"/>
    <group name="microsoft.public.dotnet.framework.aspnet.mobile"/>
    <group name="microsoft.public.dotnet.framework.aspnet.webservices"/>
</category>

Keterangan

Depth Gunakan properti untuk menentukan kedalaman simpul. Kedalaman mewakili jumlah tingkat hierarki antara simpul dan simpul akar. Misalnya, simpul akar memiliki kedalaman nol. Anak dari simpul akar memiliki kedalaman satu, dan sebagainya.

Berlaku untuk

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