SiteMapNode.Clone 方法

public:
 virtual System::Web::SiteMapNode ^ Clone();

public virtual System.Web.SiteMapNode Clone();

abstract member Clone : unit -> System.Web.SiteMapNode
override this.Clone : unit -> System.Web.SiteMapNode

Public Overridable Function Clone () As SiteMapNode

傳回

一個新節點，是目前節點的複製品。

備註

呼叫 Clone 將參數設為 false的方法。 提供者、Title、Url、DescriptionKey屬性會被複製。 與RolesAttributes集合會被複製到新的集合。 祖先節點和子節點不會被複製。

另請參閱

• Clone(Boolean)

public:
 virtual System::Web::SiteMapNode ^ Clone(bool cloneParentNodes);

public virtual System.Web.SiteMapNode Clone(bool cloneParentNodes);

abstract member Clone : bool -> System.Web.SiteMapNode
override this.Clone : bool -> System.Web.SiteMapNode

Public Overridable Function Clone (cloneParentNodes As Boolean) As SiteMapNode

參數

傳回

一個新節點，是目前節點的複製品。

範例

以下程式碼範例示範如何呼叫 Clone 該方法，從目前節點建立重複的網站映射節點。 ExpandForumPaths該方法註冊以處理該SiteMapResolve事件。 它使用該 Clone 方法建立目前網站地圖節點的工作副本，根據個人化資料修改屬性，並回傳工作副本。

private void Page_Load(object sender, EventArgs e)
{
    // The ExpandForumPaths method is called to handle
    // the SiteMapResolve event.
    SiteMap.SiteMapResolve +=
      new SiteMapResolveEventHandler(this.ExpandForumPaths);
}

private SiteMapNode ExpandForumPaths(Object sender, SiteMapResolveEventArgs e)
{
    // The current node represents a Post page in a bulletin board forum.
    // Clone the current node and all of its relevant parents. This
    // returns a site map node that a developer can then
    // walk, modifying each node.Url property in turn.
    // Since the cloned nodes are separate from the underlying
    // site navigation structure, the fixups that are made do not
    // effect the overall site navigation structure.
    SiteMapNode currentNode = SiteMap.CurrentNode.Clone(true);
    SiteMapNode tempNode = currentNode;

    // Obtain the recent IDs.
    int forumGroupID = GetMostRecentForumGroupID();
    int forumID = GetMostRecentForumID(forumGroupID);
    int postID = GetMostRecentPostID(forumID);

    // The current node, and its parents, can be modified to include
    // dynamic querystring information relevant to the currently
    // executing request.
    if (0 != postID)
    {
        tempNode.Url = tempNode.Url + "?PostID=" + postID.ToString();
    }

    if ((null != (tempNode = tempNode.ParentNode)) &&
        (0 != forumID))
    {
        tempNode.Url = tempNode.Url + "?ForumID=" + forumID.ToString();
    }

    if ((null != (tempNode = tempNode.ParentNode)) &&
        (0 != forumGroupID))
    {
        tempNode.Url = tempNode.Url + "?ForumGroupID=" + forumGroupID.ToString();
    }

    return currentNode;
}

Private Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

    ' The ExpandForumPaths method is called to handle
    ' the SiteMapResolve event.
    AddHandler SiteMap.SiteMapResolve, AddressOf Me.ExpandForumPaths

End Sub

Private Function ExpandForumPaths(ByVal sender As Object, ByVal e As SiteMapResolveEventArgs) As SiteMapNode
    ' The current node represents a Post page in a bulletin board forum.
    ' Clone the current node and all of its relevant parents. This
    ' returns a site map node that a developer can then
    ' walk, modifying each node.Url property in turn.
    ' Since the cloned nodes are separate from the underlying
    ' site navigation structure, the fixups that are made do not
    ' effect the overall site navigation structure.
    Dim currentNode As SiteMapNode = SiteMap.CurrentNode.Clone(True)
    Dim tempNode As SiteMapNode = currentNode

    ' Obtain the recent IDs.
    Dim forumGroupID As Integer = GetMostRecentForumGroupID()
    Dim forumID As Integer = GetMostRecentForumID(forumGroupID)
    Dim postID As Integer = GetMostRecentPostID(forumID)

    ' The current node, and its parents, can be modified to include
    ' dynamic querystring information relevant to the currently
    ' executing request.
    If Not (0 = postID) Then
        tempNode.Url = tempNode.Url & "?PostID=" & postID.ToString()
    End If

    tempNode = tempNode.ParentNode
    If Not (0 = forumID) And Not (tempNode Is Nothing) Then
        tempNode.Url = tempNode.Url & "?ForumID=" & forumID.ToString()
    End If

    tempNode = tempNode.ParentNode
    If Not (0 = ForumGroupID) And Not (tempNode Is Nothing) Then
        tempNode.Url = tempNode.Url & "?ForumGroupID=" & forumGroupID.ToString()
    End If

    Return currentNode

End Function

備註

若 cloneParentNodes 參數為 true，該 Clone 方法遞迴克隆所有直接祖先節點，並將其關聯至目前克隆的節點。 子節點不會被複製。

與RolesAttributes集合會套用到新的集合。

另請參閱

• Clone()