SiteMapNodeCollection.IndexOf(SiteMapNode) 方法

定义

命名空间:

System.Web

程序集:

System.Web.dll

搜索指定的 SiteMapNode 对象，并返回整个集合中第一个匹配项的从零开始的索引。

public:
 virtual int IndexOf(System::Web::SiteMapNode ^ value);

public virtual int IndexOf (System.Web.SiteMapNode value);

abstract member IndexOf : System.Web.SiteMapNode -> int
override this.IndexOf : System.Web.SiteMapNode -> int

Public Overridable Function IndexOf (value As SiteMapNode) As Integer

参数

value

SiteMapNode

要在 SiteMapNode 中定位的 SiteMapNodeCollection。

返回

Int32

如果找到，则为整个 value 中 SiteMapNodeCollection 第一个匹配项的从零开始的索引；否则为 -1。

示例

下面的代码示例演示如何使用 Contains 类的和 IndexOf 方法 SiteMapNodeCollection 。 该代码检查两个提供程序， AspNetXmlSiteMapProvider 以及 MyXmlSiteMapProvider是否检查重复的根节点的子节点。

String providername1 = "AspNetXmlSiteMapProvider";
String providername2 = "MyXmlSiteMapProvider";
SiteMapProviderCollection providers = SiteMap.Providers;

if (providers[providername1] != null && providers[providername2] != null)
{
  SiteMapProvider provider1 = providers[providername1];
  SiteMapProvider provider2 = providers[providername2];
  SiteMapNodeCollection collection1 = provider1.RootNode.ChildNodes;
  SiteMapNodeCollection collection2 = provider2.RootNode.ChildNodes;
  int matches = 0;
  foreach (SiteMapNode node in collection1)
  {
    if (collection2.Contains(node))
    {
      Response.Write("Match found at " +
        providername1 + ", index = " +
        collection1.IndexOf(node) + " with " +
        providername2 + ", index = " +
        collection2.IndexOf(node) + ".<br />");
      matches++;
    }
  }
  Response.Write("Number of matches found = " +
    matches.ToString() + ".");
}
else
{
  Response.Write(providername1 + " or " +
    providername2 + " not found.");
}

Dim providername1 As String = "xAspNetXmlSiteMapProvider"
Dim providername2 As String = "MyXmlSiteMapProvider"
Dim providers As SiteMapProviderCollection = SiteMap.Providers

If Not (providers(providername1) Is Nothing) AndAlso Not (providers(providername2) Is Nothing) Then
  Dim provider1 As SiteMapProvider = providers(providername1)
  Dim provider2 As SiteMapProvider = providers(providername2)
  Dim collection1 As SiteMapNodeCollection = provider1.RootNode.ChildNodes
  Dim collection2 As SiteMapNodeCollection = provider2.RootNode.ChildNodes
  Dim matches As Integer = 0
  Dim node As SiteMapNode
  For Each node In collection1
    If collection2.Contains(node) Then
      Response.Write("Match found at " & _
      providername1 & ", index = " & _
      collection1.IndexOf(node) & " with " & _
      providername2 & ", index = " & _
      collection2.IndexOf(node) & ".<br />")
      matches += 1
    End If
  Next node
  Response.Write("Number of matches found = " & _
  matches.ToString() + ".")
Else
  Response.Write(providername1 & " or " & _
  providername2 & " not found.")
End If    

注解

该方法 IndexOf 通过调用 Object.Equals 该方法来确定相等性。