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TreeNodeBindingCollection.Add(TreeNodeBinding) 方法

  • 參考

定義

命名空間:
System.Web.UI.WebControls
組件:
System.Web.dll

將指定的 TreeNodeBinding 物件附加至 TreeNodeBindingCollection 物件的結尾。

public:
 int Add(System::Web::UI::WebControls::TreeNodeBinding ^ binding);
public int Add (System.Web.UI.WebControls.TreeNodeBinding binding);
member this.Add : System.Web.UI.WebControls.TreeNodeBinding -> int
Public Function Add (binding As TreeNodeBinding) As Integer

參數

binding
TreeNodeBinding

要附加的 TreeNodeBinding。

傳回

Int32

TreeNodeBinding 中加入了 TreeNodeBindingCollection 之以零起始的索引位置。

範例

下列程式碼範例示範如何使用 Add 方法，以程式設計方式將新的 TreeNodeBinding 物件新增至 TreeNodeBindingCollection 物件。 若要讓此範例正常運作，您必須將位於本節結尾的 XML 資料複製到名為 Book.xml 的檔案。


<%@ 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_Load(Object sender, EventArgs e)
  {

    // Use the Remove method to remove the TreeNodeBinding object
    // for the third-level nodes (index 2).
    TreeNodeBinding oldBinding = BookTreeView.DataBindings[2];
    BookTreeView.DataBindings.Remove(oldBinding);

    // Create a new TreeNodeBinding object and set its properties.
    TreeNodeBinding newBinding = new TreeNodeBinding();
    newBinding.DataMember = "Section";
    newBinding.TextField = "Subject";

    // Use the Add method to add the TreeNodeBinding object to the 
    // DataBindings collection.
    BookTreeView.DataBindings.Add(newBinding);

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNodeBindingCollection Add and Remove Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNodeBindingCollection Add and Remove Example</h3>
    
      <asp:TreeView id="BookTreeView" 
        DataSourceID="BookXmlDataSource"
        runat="server">
         
        <DataBindings>
          <asp:TreeNodeBinding DataMember="Book" TextField="Title"/>
          <asp:TreeNodeBinding DataMember="Chapter" TextField="Heading"/>
          <asp:TreeNodeBinding DataMember="Section" TextField="Heading"/>
        </DataBindings>
         
      </asp:TreeView>

      <asp:XmlDataSource id="BookXmlDataSource"  
        DataFile="Book.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 Page_Load(ByVal sender As Object, ByVal e As EventArgs)

    ' Use the Remove method to remove the TreeNodeBinding object
    ' for the third-level nodes (index 2).
    Dim oldBinding As TreeNodeBinding = BookTreeView.DataBindings(2)
    BookTreeView.DataBindings.Remove(oldBinding)

    ' Create a new TreeNodeBinding object and set its properties.
    Dim newBinding As TreeNodeBinding = New TreeNodeBinding
    newBinding.DataMember = "Section"
    newBinding.TextField = "Subject"

    ' Use the Add method to add the TreeNodeBinding object to the 
    ' DataBindings collection.
    BookTreeView.DataBindings.Add(newBinding)

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNodeBindingCollection Add and Remove Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNodeBindingCollection Add and Remove Example</h3>
    
      <asp:TreeView id="BookTreeView" 
        DataSourceID="BookXmlDataSource"
        runat="server">
         
        <DataBindings>
          <asp:TreeNodeBinding DataMember="Book" TextField="Title"/>
          <asp:TreeNodeBinding DataMember="Chapter" TextField="Heading"/>
          <asp:TreeNodeBinding DataMember="Section" TextField="Heading"/>
        </DataBindings>
         
      </asp:TreeView>

      <asp:XmlDataSource id="BookXmlDataSource"  
        DataFile="Book.xml"
        runat="server">
      </asp:XmlDataSource>
    
    </form>
  </body>
</html>

以下是上述程式碼範例的 XML 資料。

<Book Title="Book Title">  
    <Chapter Heading="Chapter 1">  
        <Section Heading="Section 1"  
            Subject="Subject 1">  
        </Section>  
        <Section Heading="Section 2"  
            Subject="Subject 1">  
        </Section>  
    </Chapter>  
    <Chapter Heading="Chapter 2">  
        <Section Heading="Section 1"  
            Subject="Subject 1">  
        </Section>  
    </Chapter>  
</Book>

備註

Add使用 方法，將指定的 TreeNodeBinding 物件附加至 物件的結尾 TreeNodeBindingCollection 。

或者，您也可以使用 Insert 方法，將 物件插入 TreeNodeBindingTreeNodeBindingCollection 至特定索引處。

適用於

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