TreeNodeBindingCollection.Insert(Int32, TreeNodeBinding) Metoda

Definice

Obor názvů:
System.Web.UI.WebControls
Sestavení:
System.Web.dll

Vloží zadaný TreeNodeBinding objekt do objektu TreeNodeBindingCollection v zadaném umístění indexu.

public:
 void Insert(int index, System::Web::UI::WebControls::TreeNodeBinding ^ binding);
public void Insert(int index, System.Web.UI.WebControls.TreeNodeBinding binding);
member this.Insert : int * System.Web.UI.WebControls.TreeNodeBinding -> unit
Public Sub Insert (index As Integer, binding As TreeNodeBinding)

Parametry

index
Int32

Umístění indexu založeného na nule, do kterého chcete vložit TreeNodeBinding.

binding
TreeNodeBinding

Vložte TreeNodeBinding ho.

Příklady

Následující příklad kódu ukazuje, jak pomocí Insert metody vložit nový TreeNodeBinding objekt programově do objektu TreeNodeBindingCollection . Aby tento příklad fungoval správně, musíte zkopírovat data XML umístěná na konci tohoto oddílu do souboru s názvem Book.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 Page_Load(Object sender, EventArgs e)
  {

    // Use the RemoveAt method to remove the TreeNodeBinding object 
    // for the third-level nodes (index 2).
    BookTreeView.DataBindings.RemoveAt(2);

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

    // Use the Insert method to insert the TreeNodeBinding object 
    // into the DaaBindings collection at index 2.
    BookTreeView.DataBindings.Insert(2, newBinding);

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNodeBindingCollection Insert and RemoveAt Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNodeBindingCollection Insert and RemoveAt 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 RemoveAt method to remove the TreeNodeBinding object
        ' for the third-level nodes (index 2).
        BookTreeView.DataBindings.RemoveAt(2)

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

        ' Use the Insert method to insert the TreeNodeBinding object to
        ' the DataBindings collection at index 2.
        BookTreeView.DataBindings.Insert(2, newBinding)

    End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
    <head runat="server">
    <title>TreeNodeBindingCollection Insert and RemoveAt Example</title>
</head>
<body>
        <form id="form1" runat="server">
        
            <h3>TreeNodeBindingCollection Insert and RemoveAt 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>

Následuje data XML pro předchozí příklad kódu.

<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>

Poznámky

Použijte metodu Insert pro vložení zadaného TreeNodeBinding objektu do objektu TreeNodeBindingCollection na adrese index.

Jako alternativu můžete k konci TreeNodeBindingTreeNodeBindingCollection metody připojit Add objekt.

Platí pro

Viz také