Aracılığıyla paylaş

TreeNodeBindingCollection.Remove(TreeNodeBinding) Yöntem

  • Başvuru

Tanım

Ad Alanı:
System.Web.UI.WebControls
Bütünleştirilmiş Kod:
System.Web.dll

Belirtilen TreeNodeBinding nesneyi nesneden TreeNodeBindingCollection kaldırır.

public:
 void Remove(System::Web::UI::WebControls::TreeNodeBinding ^ binding);
public void Remove (System.Web.UI.WebControls.TreeNodeBinding binding);
member this.Remove : System.Web.UI.WebControls.TreeNodeBinding -> unit
Public Sub Remove (binding As TreeNodeBinding)

Parametreler

binding
TreeNodeBinding

TreeNodeBinding Kaldırılacak.

Örnekler

Aşağıdaki kod örneği, bir nesneyi bir TreeNodeBinding nesneden TreeNodeBindingCollection program aracılığıyla kaldırmak için yönteminin nasıl kullanılacağını Remove gösterir. Bu örneğin düzgün çalışması için, bu bölümün sonunda bulunan XML verilerini Book.xml adlı bir dosyaya kopyalamanız gerekir.


<%@ 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>

Yukarıdaki kod örneğinin XML verileri aşağıda verilmiştir.

<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>

Açıklamalar

Remove Belirtilen TreeNodeBinding nesneyi koleksiyondan kaldırmak için yöntemini kullanın. Bu düğümü izleyen tüm öğeler daha sonra boş konumu doldurmak için yukarı taşınır. Taşınan öğelerin dizinleri de güncelleştirilir.

Alternatif olarak, yöntemini kullanarak RemoveAt belirli bir dizindeki bir düğümü kaldırabilirsiniz. Yöntemini kullanarak Clear koleksiyondaki tüm düğümleri de kaldırabilirsiniz.

Şunlara uygulanır

Ayrıca bkz.