SessionStateUtility.RaiseSessionEnd 方法

定义

命名空间:

System.Web.SessionState

程序集:

System.Web.dll

为 ASP.NET 应用程序执行 Global.asax 文件中定义的 Session_OnEnd 事件。

public:
 static void RaiseSessionEnd(System::Web::SessionState::IHttpSessionState ^ session, System::Object ^ eventSource, EventArgs ^ eventArgs);

public static void RaiseSessionEnd (System.Web.SessionState.IHttpSessionState session, object eventSource, EventArgs eventArgs);

static member RaiseSessionEnd : System.Web.SessionState.IHttpSessionState * obj * EventArgs -> unit

Public Shared Sub RaiseSessionEnd (session As IHttpSessionState, eventSource As Object, eventArgs As EventArgs)

参数

session

IHttpSessionState

已结束的会话的 IHttpSessionState 实现实例。

eventSource

Object

要提供给 Session_OnEnd 事件的事件源对象。

eventArgs

EventArgs

要提供给 Session_OnEnd 事件的 EventArgs 对象。

示例

下面的代码示例演示自定义会话状态模块中 事件的处理程序 ReleaseRequestState 。 如果已放弃会话，则模块将使用 RaiseSessionEnd 方法执行在应用程序的 Global.asax 文件中定义的 Session_OnEnd 事件。 此代码示例是为 SessionStateUtility 类提供的一个更大示例的一部分。

//
// Event handler for HttpApplication.ReleaseRequestState
//

private void OnReleaseRequestState(object source, EventArgs args)
{
    HttpApplication app = (HttpApplication)source;
    HttpContext context = app.Context;
    string sessionID;

    // Read the session state from the context
    HttpSessionStateContainer stateProvider =
      (HttpSessionStateContainer)(SessionStateUtility.GetHttpSessionStateFromContext(context));

    // If Session.Abandon() was called, remove the session data from the local Hashtable
    // and execute the Session_OnEnd event from the Global.asax file.
    if (stateProvider.IsAbandoned)
    {
        try
        {
            pHashtableLock.AcquireWriterLock(Int32.MaxValue);

            sessionID = pSessionIDManager.GetSessionID(context);
            pSessionItems.Remove(sessionID);
        }
        finally
        {
            pHashtableLock.ReleaseWriterLock();
        }

        SessionStateUtility.RaiseSessionEnd(stateProvider, this, EventArgs.Empty);
    }

    SessionStateUtility.RemoveHttpSessionStateFromContext(context);
}

'
' Event handler for HttpApplication.ReleaseRequestState
'
Private Sub OnReleaseRequestState(ByVal [source] As Object, ByVal args As EventArgs)
    Dim app As HttpApplication = CType([source], HttpApplication)
    Dim context As HttpContext = app.Context
    Dim sessionID As String

    ' Read the session state from the context
    Dim stateProvider As HttpSessionStateContainer = _
       CType(SessionStateUtility.GetHttpSessionStateFromContext(context), HttpSessionStateContainer)

    ' If Session.Abandon() was called, remove the session data from the local Hashtable
    ' and execute the Session_OnEnd event from the Global.asax file.
    If stateProvider.IsAbandoned Then
        Try
            pHashtableLock.AcquireWriterLock(Int32.MaxValue)

            sessionID = pSessionIDManager.GetSessionID(context)
            pSessionItems.Remove(sessionID)
        Finally
            pHashtableLock.ReleaseWriterLock()
        End Try

        SessionStateUtility.RaiseSessionEnd(stateProvider, Me, EventArgs.Empty)
    End If

  SessionStateUtility.RemoveHttpSessionStateFromContext(context)
End Sub

注解

RaiseSessionEnd会话状态模块使用 方法执行 ASP.NET 应用程序的 Global.asax 文件中定义的 Session_OnEnd 事件。 会话状态模块将在会话已放弃或会话过期时调用 RaiseSessionEnd 方法。