FormsAuthenticationEventHandler Delegát

Definice

Představuje metodu, která zpracovává událost FormsAuthentication_OnAuthenticate FormsAuthenticationModule .Represents the method that handles the FormsAuthentication_OnAuthenticate event of a FormsAuthenticationModule.

public delegate void FormsAuthenticationEventHandler(System::Object ^ sender, FormsAuthenticationEventArgs ^ e);
public delegate void FormsAuthenticationEventHandler(object sender, FormsAuthenticationEventArgs e);
type FormsAuthenticationEventHandler = delegate of obj * FormsAuthenticationEventArgs -> unit
Public Delegate Sub FormsAuthenticationEventHandler(sender As Object, e As FormsAuthenticationEventArgs)

Parametry

sender
Object

Zdroj událostiThe source of the event.

e
FormsAuthenticationEventArgs

Obsahující FormsAuthenticationEventArgs data události.A FormsAuthenticationEventArgs that contains the event data.

Příklady

Následující příklad kódu používá událost FormsAuthentication_OnAuthenticate k nastavení User vlastnosti aktuálního HttpContext GenericPrincipal objektu na objekt s vlastním Identity .The following code example uses the FormsAuthentication_OnAuthenticate event to set the User property of the current HttpContext to a GenericPrincipal object with a custom Identity.

public void FormsAuthentication_OnAuthenticate(object sender, FormsAuthenticationEventArgs args)
{
  if (FormsAuthentication.CookiesSupported)
  {
    if (Request.Cookies[FormsAuthentication.FormsCookieName] != null)
    {
      try
      {
        FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(
          Request.Cookies[FormsAuthentication.FormsCookieName].Value);
        
        args.User = new System.Security.Principal.GenericPrincipal(
          new Samples.AspNet.Security.MyFormsIdentity(ticket),
          new string[0]);
      }
      catch (Exception e)
      {
        // Decrypt method failed.
      }
    }
  }
  else
  {
    throw new HttpException("Cookieless Forms Authentication is not " +
                            "supported for this application.");
  }
}
Public Sub FormsAuthentication_OnAuthenticate(sender As Object, _
                                              args As FormsAuthenticationEventArgs)
  If FormsAuthentication.CookiesSupported Then
    If Not Request.Cookies(FormsAuthentication.FormsCookieName) Is Nothing Then
      Try
        Dim ticket As FormsAuthenticationTicket = FormsAuthentication.Decrypt( _
          Request.Cookies(FormsAuthentication.FormsCookieName).Value)
        
        args.User = New System.Security.Principal.GenericPrincipal( _
          New Samples.AspNet.Security.MyFormsIdentity(ticket), _
          New String(0) {})
      Catch e As HttpException
        ' Decrypt method failed.
      End Try
    End If
  Else
      Throw New Exception("Cookieless Forms Authentication is not " & _
                            "supported for this application.")
  End If
End Sub

Poznámky

FormsAuthenticationEventHandlerDelegát je definován pro Authenticate událost FormsAuthenticationModule třídy.The FormsAuthenticationEventHandler delegate is defined for the Authenticate event of the FormsAuthenticationModule class. K Authenticate události třídy můžete přistupovat FormsAuthenticationModule zadáním podrutiny s názvem FormsAuthentication_OnAuthenticate v souboru Global. asax vaší aplikace ASP.NET.You can access the Authenticate event of the FormsAuthenticationModule class by specifying a subroutine named FormsAuthentication_OnAuthenticate in the Global.asax file for your ASP.NET application. AuthenticateUdálost je vyvolána během AuthenticateRequest události.The Authenticate event is raised during the AuthenticateRequest event.

FormsAuthenticationModuleVytvoří FormsAuthenticationEventArgs objekt pomocí aktuálního HttpContext a předá událost FormsAuthentication_OnAuthenticate .The FormsAuthenticationModule constructs a FormsAuthenticationEventArgs object using the current HttpContext and passes it to the FormsAuthentication_OnAuthenticate event.

Můžete použít User vlastnost FormsAuthenticationEventArgs objektu dodané události FormsAuthentication_OnAuthenticate pro nastavení User vlastnosti aktuální HttpContext na vlastní IPrincipal objekt.You can use the User property of the FormsAuthenticationEventArgs object supplied to the FormsAuthentication_OnAuthenticate event to set the User property of the current HttpContext to a custom IPrincipal object. Pokud nezadáte hodnotu User vlastnosti během události FormsAuthentication_OnAuthenticate , použije se identita poskytnutá lístkem pro ověřování pomocí formulářů v souboru cookie nebo adrese URL.If you do not specify a value for the User property during the FormsAuthentication_OnAuthenticate event, the identity supplied by the forms authentication ticket in the cookie or URL is used.

Událost FormsAuthentication_OnAuthenticate se vyvolá jenom v případě, že je ověřování Mode nastavené na Forms a FormsAuthenticationModule je aktivní modul HTTP pro aplikaci.The FormsAuthentication_OnAuthenticate event is only raised when the authentication Mode is set to Forms and the FormsAuthenticationModule is an active HTTP module for the application.

Metody rozšíření

GetMethodInfo(Delegate)

Získává objekt, který představuje metodu reprezentovanou zadaným delegátem.Gets an object that represents the method represented by the specified delegate.

Platí pro