SiteMapNodeItem(Int32, SiteMapNodeItemType) 建構函式

定義

命名空間:

System.Web.UI.WebControls

組件:

System.Web.dll

使用指定的索引和 SiteMapNodeItem 初始化 SiteMapNodeItemType 類別的新執行個體。

public:
 SiteMapNodeItem(int itemIndex, System::Web::UI::WebControls::SiteMapNodeItemType itemType);

public SiteMapNodeItem (int itemIndex, System.Web.UI.WebControls.SiteMapNodeItemType itemType);

new System.Web.UI.WebControls.SiteMapNodeItem : int * System.Web.UI.WebControls.SiteMapNodeItemType -> System.Web.UI.WebControls.SiteMapNodeItem

Public Sub New (itemIndex As Integer, itemType As SiteMapNodeItemType)

參數

itemIndex

Int32

Controls 集合中的索引，SiteMapPath 控制項使用這個索引來追蹤 SiteMapNodeItem 物件。

itemType

SiteMapNodeItemType

這個 SiteMapNode 所表示的 SiteMapNodeItem 功能型別。

範例

下列程式碼範例示範如何建立 SiteMapNodeItem 物件。 此程式碼範例是針對 類別提供的較大範例的 SiteMapPath 一部分。

private void AddDropDownListAfterCurrentNode(SiteMapNodeItem item) {

    SiteMapNodeCollection childNodes = item.SiteMapNode.ChildNodes;

    // Only do this work if there are child nodes.
    if (childNodes != null) {

        // Add another PathSeparator after the CurrentNode.
        SiteMapNodeItem finalSeparator =
            new SiteMapNodeItem(item.ItemIndex,
                                SiteMapNodeItemType.PathSeparator);

        SiteMapNodeItemEventArgs eventArgs =
            new SiteMapNodeItemEventArgs(finalSeparator);

        InitializeItem(finalSeparator);
        // Call OnItemCreated every time a SiteMapNodeItem is
        // created and initialized.
        OnItemCreated(eventArgs);

        // The pathSeparator does not bind to any SiteMapNode, so
        // do not call DataBind on the SiteMapNodeItem.
        item.Controls.Add(finalSeparator);

        // Create a DropDownList and populate it with the children of the
        // CurrentNode. There are no styles or templates that are applied
        // to the DropDownList control. If OnSelectedIndexChanged is raised,
        // the event handler redirects to the page selected.
        // The CurrentNode has child nodes.
        DropDownList ddList = new DropDownList();
        ddList.AutoPostBack = true;

        ddList.SelectedIndexChanged += new EventHandler(this.DropDownNavPathEventHandler);

        // Add a ListItem to the DropDownList for every node in the
        // SiteMapNodes collection.
        foreach (SiteMapNode node in childNodes) {
            ddList.Items.Add(new ListItem(node.Title, node.Url));
        }

        item.Controls.Add(ddList);
    }
}

Private Sub AddDropDownListAfterCurrentNode(item As SiteMapNodeItem)

   Dim childNodes As SiteMapNodeCollection = item.SiteMapNode.ChildNodes

   ' Only do this work if there are child nodes.
   If Not (childNodes Is Nothing) Then

      ' Add another PathSeparator after the CurrentNode.
      Dim finalSeparator As New SiteMapNodeItem(item.ItemIndex, SiteMapNodeItemType.PathSeparator)

      Dim eventArgs As New SiteMapNodeItemEventArgs(finalSeparator)

      InitializeItem(finalSeparator)
      ' Call OnItemCreated every time a SiteMapNodeItem is
      ' created and initialized.
      OnItemCreated(eventArgs)

      ' The pathSeparator does not bind to any SiteMapNode, so
      ' do not call DataBind on the SiteMapNodeItem.
      item.Controls.Add(finalSeparator)

      ' Create a DropDownList and populate it with the children of the
      ' CurrentNode. There are no styles or templates that are applied
      ' to the DropDownList control. If OnSelectedIndexChanged is raised,
      ' the event handler redirects to the page selected.
      ' The CurrentNode has child nodes.
      Dim ddList As New DropDownList()
      ddList.AutoPostBack = True

      AddHandler ddList.SelectedIndexChanged, AddressOf Me.DropDownNavPathEventHandler

      ' Add a ListItem to the DropDownList for every node in the
      ' SiteMapNodes collection.
      Dim node As SiteMapNode
      For Each node In  childNodes
         ddList.Items.Add(New ListItem(node.Title, node.Url))
      Next node

      item.Controls.Add(ddList)
   End If
End Sub

備註

PathDirection如果 為 RootToCurrent ，您可以在集合結尾 Controls 新增網站導覽階層的每個更深層專案。 不過，如果 PathDirection 屬性設定 CurrentToRoot 為 ，則必須在集合開頭插入每個更深層的 Controls 節點。

另請參閱

• ItemType
• ItemIndex