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TreeNodeBindingCollection.CopyTo(TreeNodeBinding[], Int32) Yöntem

  • Başvuru

Tanım

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

Nesnedeki tüm öğeleri, hedef dizideki TreeNodeBindingCollection belirtilen dizinden başlayarak uyumlu bir tek boyutlu nesne dizisine TreeNodeBinding kopyalar.

public:
 void CopyTo(cli::array <System::Web::UI::WebControls::TreeNodeBinding ^> ^ bindingArray, int index);
public void CopyTo (System.Web.UI.WebControls.TreeNodeBinding[] bindingArray, int index);
override this.CopyTo : System.Web.UI.WebControls.TreeNodeBinding[] * int -> unit
Public Sub CopyTo (bindingArray As TreeNodeBinding(), index As Integer)

Parametreler

bindingArray
TreeNodeBinding[]

öğesinden TreeNodeBindingCollectionkopyalanan öğeleri alan sıfır tabanlı bir nesne dizisiTreeNodeBinding.

index
Int32

Kopyalanan içeriğin alınmaya başlandığı konum bindingArray .

Örnekler

Aşağıdaki kod örneği, koleksiyonun CopyTo içeriğini bir diziye kopyalamak için yönteminin DataBindings nasıl kullanılacağını gösterir.


<%@ 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)
  {

    // Create an array of TreeNodeBinding objects and then use the
    // CopyTo method to copy the contents of the DataBindings collection
    // to the array.
    TreeNodeBinding[] bindings = new TreeNodeBinding[BookTreeView.DataBindings.Count];
    BookTreeView.DataBindings.CopyTo(bindings, 0);

    // Iterate through the array and display the value of the text field
    // property of each TreeNodeBinding object.
    MessageLabel.Text = "The field names for each node level are: <br/>";

    foreach (TreeNodeBinding binding in bindings)
    {

      MessageLabel.Text += binding.TextField + "<br/>";

    }

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNodeBindingCollection CopyTo Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNodeBindingCollection CopyTo 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="Subject"/>
        </DataBindings>
         
      </asp:TreeView>
      
      <asp:XmlDataSource id="BookXmlDataSource"  
         DataFile="Book.xml"
         runat="server">
      </asp:XmlDataSource>
    
      <br/>
    
      <asp:Label id="MessageLabel" runat="server"/>
    
    </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)

    ' Create an array of TreeNodeBinding objects and then use the
    ' CopyTo method to copy the contents of the DataBindings collection
    ' to the array.
    Dim bindings(BookTreeView.DataBindings.Count - 1) As TreeNodeBinding
    BookTreeView.DataBindings.CopyTo(bindings, 0)

    ' Iterate through the array and display the value of the text field
    ' property of each TreeNodeBinding object.
    MessageLabel.Text = "The field names for each node level are: <br/>"

    
    Dim binding As TreeNodeBinding
    For Each binding In bindings

      MessageLabel.Text &= binding.TextField & "<br/>"

    Next

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNodeBindingCollection CopyTo Example</title>
</head>
<body>
    <form id="form1" runat="server">
    
      <h3>TreeNodeBindingCollection CopyTo 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="Subject"/>
        </DataBindings>
         
      </asp:TreeView>
      
      <asp:XmlDataSource id="BookXmlDataSource"  
         DataFile="Book.xml"
         runat="server">
      </asp:XmlDataSource>
    
      <br/>
    
      <asp:Label id="MessageLabel" runat="server"/>
    
    </form>
  </body>
</html>

Açıklamalar

nesnesinin CopyTobindingArrayiçeriğini TreeNodeBindingCollection içine kopyalamak için yöntemini kullanın. Öğeler konumundan indexbaşlayarak kopyalanır. Daha sonra dizisini kullanarak koleksiyondaki öğelere erişebilirsiniz.

Alternatif olarak, yöntemini kullanarak koleksiyondaki GetEnumerator öğelere erişmek için kullanılabilecek bir numaralandırıcı oluşturabilirsiniz.

Şunlara uygulanır

Ayrıca bkz.