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Metodo HttpModuleCollection.GetKey

Restituisce la chiave, ossia il nome, dell'oggetto IHttpModule in corrispondenza dell'indice numerico specificato.

Spazio dei nomi: System.Web
Assembly: System.Web (in system.web.dll)

public string GetKey (
	int index
)
public String GetKey (
	int index
)
public function GetKey (
	index : int
) : String

Parametri

index

Indice della chiave da recuperare dall'insieme.

Valore restituito

Nome del membro IHttpModule specificato dal parametro index.

Nell'esempio di codice riportato di seguito vengono illustrate la proprietà AllKeys e i metodi GetKey e CopyTo della classe HttpModuleCollection . Nell'esempio viene ottenuto l'oggetto applicazione per la richiesta corrente dall'oggetto HttpContext corrente. Viene quindi estratto l'oggetto HttpModuleCollection dall'istanza dell'applicazione e vengono visualizzati i nomi degli oggetti IHttpModule.

<%@ Page language="C#" %>
<%@ Import Namespace = "System.Data"  %>
<HTML>
<HEAD>
<script runat="server">
// System.Web.HttpModuleCollection.AllKeys;GetKey;CopyTo

void Page_Load(object sender, System.EventArgs e)
{
    // Get the HttpContext object for the current request.
    HttpContext myHttpContext = HttpContext.Current;
    // Get the application object for the current request.
    HttpApplication myHttpApplication = myHttpContext.ApplicationInstance;
    // Get the collection of all HTTPModule objects for the current application.
    HttpModuleCollection myHttpModuleCollection = myHttpApplication.Modules;

    // Get the name of the HttpModule object at index 1.
    string httpModuleName = myHttpModuleCollection.GetKey(1);
    Response.Write("The name of the HttpModule object at index 1" + " is " +"'"+  httpModuleName+"'." + "<br><br>"); 

    string[] allModules = myHttpModuleCollection.AllKeys;

    // Display the names of all HttpModule objects.
    Response.Write("<b>The HttpModule objects contained in the HttpModuleCollection are:</b><br>");

    for(int i=0; i < allModules.Length; i++)
       Response.Write("Module" + i + "  : " + allModules[i] + "<br>");

    // Copy the HttpModule objects in the collection into an array.
    System.Array httpModuleArray = Array.CreateInstance(typeof(object),myHttpModuleCollection.AllKeys.Length);
    myHttpModuleCollection.CopyTo(httpModuleArray,0);
    Response.Write("<br><br><b>Successfully copied the HttpModule objects in the HttpModuleCollection to an array."+
       "<br>Displaying the HttpModule objects in array:</b><br>");

    for(int i=0; i < httpModuleArray.Length; i++)
       Response.Write("Module" + i + ": " + httpModuleArray.GetValue(i) + "<br>");

}
</script>
</HEAD>
</HTML>

<%@ Page language="VJ#" %>
<%@ Import Namespace = "System.Data"  %>
<HTML>
<HEAD>
<script runat="server">
// System.Web.HttpModuleCollection.AllKeys;GetKey;CopyTo

void Page_Load(Object sender, System.EventArgs e)
{
    // The following example demonstrates the AllKeys property and the GetKey and
    // CopyTo methods of the HttpModuleCollection class. The example gets the 
    // application object for the current request from the current HttpContext 
    // object. It then extracts the HttpModuleCollection object from the 
    // application instance and displays the names of the HttpModule objects.


    // Get the HttpContext object for the current request.
    HttpContext myHttpContext = HttpContext.get_Current();
    // Get the application object for the current request.
    HttpApplication myHttpApplication = myHttpContext.get_ApplicationInstance();
    // Get the collection of all HTTPModule objects for the current application.
    HttpModuleCollection myHttpModuleCollection = 
        myHttpApplication.get_Modules();
           
    // Get the name of the HttpModule object at index 1.
    String httpModuleName = myHttpModuleCollection.GetKey(1);
    get_Response().Write("The name of the HttpModule object at index 1" 
        + " is " +"'"+  httpModuleName+"'." + "<br><br>"); 
          
    String allModules[] = myHttpModuleCollection.get_AllKeys();
          
    // Display the names of all HttpModule objects.
    get_Response().Write("<b>The HttpModule objects contained in the " 
        + "HttpModuleCollection are:</b><br>");
    for(int i=0; i < allModules.get_Length(); i++) {
        get_Response().Write("Module" + i + "  : " 
            + allModules[i] + "<br>");
    }

    // Copy the HttpModule objects in the collection into an array.
    System.Array httpModuleArray = Array.CreateInstance(Object.class.ToType(),
        myHttpModuleCollection.get_AllKeys().get_Length());
    myHttpModuleCollection.CopyTo(httpModuleArray,0);
    
    get_Response().Write("<br><br><b>Successfully copied the HttpModule " 
        + "objects in the HttpModuleCollection to an array."
        + "<br>Displaying the HttpModule objects in array:</b><br>");
    
    for(int i=0; i < httpModuleArray.get_Length(); i++) {
        get_Response().Write("Module" + i + ": " + httpModuleArray.GetValue(i) 
            + "<br>");
    }
} // Page_Load
</script>
</HEAD>
</HTML>

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework non supporta tutte le versioni di ciascuna piattaforma. Per un elenco delle versioni supportate, vedere Requisiti di sistema.

.NET Framework

Supportato in: 2.0 1.1 1.0
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