SiteMapNode.Clone Méthode

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

Retours

Un nouvel objet qui constitue une copie du nœud actuel.

Remarques

Appelle la Clone méthode avec le paramètre défini sur false. Les propriétés du fournisseur , Title, UrlDescription, et Key sont copiées. Les Roles collections et Attributes sont copiées dans de nouvelles collections. Les nœuds ancêtres et enfants ne sont pas clonés.

Voir aussi

• 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

Paramètres

Retours

Un nouvel objet qui constitue une copie du nœud actuel.

Exemples

L’exemple de code suivant montre comment appeler la Clone méthode pour créer un nœud de plan de site en double à partir du nœud actuel. La ExpandForumPaths méthode est inscrite pour gérer l’événement SiteMapResolve . Il utilise la Clone méthode pour créer une copie de travail du nœud de plan de site actuel, modifier des attributs en fonction des données de personnalisation et retourner la copie de travail.

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

Remarques

Si le cloneParentNodes paramètre est true, la Clone méthode clone de manière récursive tous les nœuds ancêtres directs et les associe au nœud cloné actuel. Les nœuds enfants ne sont pas cloné.

Les Roles collections et Attributes sont appliquées aux nouvelles collections.

Voir aussi

• Clone()