TreeNodeBindingCollection.Insert(Int32, TreeNodeBinding) Método

Definição

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Insere o objeto especificado TreeNodeBinding no TreeNodeBindingCollection objeto no local de índice especificado.

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)

Parâmetros

index
Int32

O local do índice baseado em zero no qual inserir o TreeNodeBinding.

binding
TreeNodeBinding

A TreeNodeBinding inserção a ser inserida.

Exemplos

O exemplo de código a seguir demonstra como usar o Insert método para inserir um novo TreeNodeBinding objeto programaticamente em um TreeNodeBindingCollection objeto. Para que este exemplo funcione corretamente, você deve copiar os dados XML localizados no final desta seção para um arquivo chamado 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>

Veja a seguir os dados XML do exemplo de código anterior.

<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>

Comentários

Use o Insert método para inserir o objeto especificado TreeNodeBinding no TreeNodeBindingCollection objeto em index.

Como alternativa, você pode acrescentar um TreeNodeBinding objeto ao final do TreeNodeBindingCollection uso do Add método.

Aplica-se a

Confira também