Επεξεργασία

Κοινή χρήση μέσω

SiteMapNodeCollection.Item[Int32] Property

  • Reference

Definition

Namespace:
System.Web
Assembly:
System.Web.dll

Gets or sets the SiteMapNode object at the specified index in the collection.

public:
 virtual property System::Web::SiteMapNode ^ default[int] { System::Web::SiteMapNode ^ get(int index); void set(int index, System::Web::SiteMapNode ^ value); };
public virtual System.Web.SiteMapNode this[int index] { get; set; }
member this.Item(int) : System.Web.SiteMapNode with get, set
Default Public Overridable Property Item(index As Integer) As SiteMapNode

Parameters

index
Int32

The index of the SiteMapNode to find.

Property Value

SiteMapNode

A SiteMapNode that represents an element in the SiteMapNodeCollection.

Exceptions

NotSupportedException

The SiteMapNodeCollection is read-only.

ArgumentOutOfRangeException

index is less than zero.

-or-

index is great than the Count.

ArgumentNullException

The value supplied to the setter is null.

Examples

The following code example demonstrates how to use the Item[] indexer to retrieve a SiteMapNode object from the SiteMapNodeCollection collection. In this example, a SiteMapNode object is removed from its position at the second element of the internal array using the Remove method and is appended to the array with the Add method. To insert a SiteMapNode object at a specific index, instead of appending it to the end of the array, use the Insert method.


// Move a node from one spot in the list to another.
try {
    Response.Write("Original node order: <BR>");
    foreach (SiteMapNode node in nodes) {
        Response.Write( node.Title + "<BR>");
    }
    SiteMapNode aNode = nodes[1];

    Response.Write("Adding " + aNode.Title + " to the end of the collection.<BR>");
    nodes.Add(aNode);

    Response.Write("Removing " + aNode.Title + " at position 1. <BR>");
    nodes.Remove(nodes[1]);

    Response.Write("New node order: <BR>");
    foreach (SiteMapNode node in nodes) {
        Response.Write( node.Title + "<BR>");
    }
}
catch (NotSupportedException nse) {
    Response.Write("NotSupportedException caught.<BR>");
}


' Move a node from one spot in the list to another.
Try
    Response.Write("Original node order: <BR>")
    Dim node As SiteMapNode
    For Each node In nodes
        Response.Write( node.Title & "<BR>")
    Next

    Dim aNode As SiteMapNode = nodes(1)

    Response.Write("Adding " & aNode.Title & " to the end of the collection.<BR>")
    nodes.Add(aNode)

    Response.Write("Removing " & aNode.Title & " at position 1. <BR>")
    nodes.Remove(nodes(1))

    Response.Write("New node order: <BR>")

    For Each node In nodes
        Response.Write( node.Title & "<BR>")
    Next

Catch nse As NotSupportedException
    Response.Write("NotSupportedException caught.<BR>")
End Try

Remarks

You can use the Item[] indexer to iterate over the contents of a SiteMapNodeCollection collection or to replace the SiteMapNode object at a specified index.

Applies to

See also