HttpSessionStateContainer Konstruktor

Referensi

Definisi

Ruang nama:: System.Web.SessionState

Rakitan:: System.Web.dll

Penting

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Membuat objek baru HttpSessionStateContainer dan menginisialisasinya dengan pengaturan dan nilai yang ditentukan.

public:
 HttpSessionStateContainer(System::String ^ id, System::Web::SessionState::ISessionStateItemCollection ^ sessionItems, System::Web::HttpStaticObjectsCollection ^ staticObjects, int timeout, bool newSession, System::Web::HttpCookieMode cookieMode, System::Web::SessionState::SessionStateMode mode, bool isReadonly);

public HttpSessionStateContainer (string id, System.Web.SessionState.ISessionStateItemCollection sessionItems, System.Web.HttpStaticObjectsCollection staticObjects, int timeout, bool newSession, System.Web.HttpCookieMode cookieMode, System.Web.SessionState.SessionStateMode mode, bool isReadonly);

new System.Web.SessionState.HttpSessionStateContainer : string * System.Web.SessionState.ISessionStateItemCollection * System.Web.HttpStaticObjectsCollection * int * bool * System.Web.HttpCookieMode * System.Web.SessionState.SessionStateMode * bool -> System.Web.SessionState.HttpSessionStateContainer

Public Sub New (id As String, sessionItems As ISessionStateItemCollection, staticObjects As HttpStaticObjectsCollection, timeout As Integer, newSession As Boolean, cookieMode As HttpCookieMode, mode As SessionStateMode, isReadonly As Boolean)

Parameter

id: String

Pengidentifikasi sesi untuk sesi baru. Jika null, akan ArgumentException dilemparkan.

sessionItems: ISessionStateItemCollection

Yang ISessionStateItemCollection berisi nilai sesi untuk penyedia status sesi baru.

staticObjects: HttpStaticObjectsCollection

Yang HttpStaticObjectsCollection menentukan objek yang dideklarasikan oleh <object Runat="Server" Scope="Session"/> tag dalam file aplikasi ASP.NET Global.asax.

timeout: Int32

Jumlah waktu, dalam hitungan menit, yang diizinkan di antara permintaan sebelum penyedia status sesi mengakhiri sesi.

newSession: Boolean

true untuk menunjukkan sesi dibuat dengan permintaan saat ini; jika tidak, false.

cookieMode: HttpCookieMode

CookieMode untuk penyedia status sesi baru.

mode: SessionStateMode

Salah SessionStateMode satu nilai yang menentukan mode keadaan sesi saat ini.

isReadonly: Boolean

true untuk menunjukkan sesi bersifat baca-saja; jika tidak, false.

Pengecualian

ArgumentNullException

idadalah null.

Contoh

Contoh kode berikut menunjukkan AcquireRequestState penanganan aktivitas untuk modul status sesi kustom yang mengisi objek baru HttpSessionStateContainer dengan informasi sesi baru atau yang sudah ada dan menambahkannya ke HttpContext permintaan saat ini menggunakan AddHttpSessionStateToContext metode . Untuk contoh kode lengkap modul status sesi kustom, lihat SessionStateUtility gambaran umum kelas.

//
// Event handler for HttpApplication.AcquireRequestState
//

private void OnAcquireRequestState(object source, EventArgs args)
{
    HttpApplication app = (HttpApplication)source;
    HttpContext context = app.Context;
    bool isNew = false;
    string sessionID;
    SessionItem sessionData = null;
    bool supportSessionIDReissue = true;

    pSessionIDManager.InitializeRequest(context, false, out supportSessionIDReissue);
    sessionID = pSessionIDManager.GetSessionID(context);

    if (sessionID != null)
    {
        try
        {
            pHashtableLock.AcquireReaderLock(Int32.MaxValue);
            sessionData = (SessionItem)pSessionItems[sessionID];

            if (sessionData != null)
               sessionData.Expires = DateTime.Now.AddMinutes(pTimeout);
        }
        finally
        {
            pHashtableLock.ReleaseReaderLock();
        }
    }
    else
    {
        bool redirected, cookieAdded;

        sessionID = pSessionIDManager.CreateSessionID(context);
        pSessionIDManager.SaveSessionID(context, sessionID, out redirected, out cookieAdded);

        if (redirected)
            return;
    }

    if (sessionData == null)
    {
        // Identify the session as a new session state instance. Create a new SessionItem
        // and add it to the local Hashtable.

        isNew = true;

        sessionData = new SessionItem();

        sessionData.Items = new SessionStateItemCollection();
        sessionData.StaticObjects = SessionStateUtility.GetSessionStaticObjects(context);
        sessionData.Expires = DateTime.Now.AddMinutes(pTimeout);

        try
        {
            pHashtableLock.AcquireWriterLock(Int32.MaxValue);
            pSessionItems[sessionID] = sessionData;
        }
        finally
        {
            pHashtableLock.ReleaseWriterLock();
        }
    }

    // Add the session data to the current HttpContext.
    SessionStateUtility.AddHttpSessionStateToContext(context,
                     new HttpSessionStateContainer(sessionID,
                                                  sessionData.Items,
                                                  sessionData.StaticObjects,
                                                  pTimeout,
                                                  isNew,
                                                  pCookieMode,
                                                  SessionStateMode.Custom,
                                                  false));

    // Execute the Session_OnStart event for a new session.
    if (isNew && Start != null)
    {
        Start(this, EventArgs.Empty);
    }
}

//
// Event for Session_OnStart event in the Global.asax file.
//

public event EventHandler Start;

    '
    ' Event handler for HttpApplication.AcquireRequestState
    '
    Private Sub OnAcquireRequestState(ByVal [source] As Object, ByVal args As EventArgs)
        Dim app As HttpApplication = CType([source], HttpApplication)
        Dim context As HttpContext = app.Context
        Dim isNew As Boolean = False
        Dim sessionID As String
        Dim sessionData As SessionItem = Nothing
        Dim supportSessionIDReissue As Boolean = True

        pSessionIDManager.InitializeRequest(context, False, supportSessionIDReissue)
        sessionID = pSessionIDManager.GetSessionID(context)


        If Not (sessionID Is Nothing) Then
            Try
                pHashtableLock.AcquireReaderLock(Int32.MaxValue)
                sessionData = CType(pSessionItems(sessionID), SessionItem)

                If Not (sessionData Is Nothing) Then
                    sessionData.Expires = DateTime.Now.AddMinutes(pTimeout)
                End If
            Finally
                pHashtableLock.ReleaseReaderLock()
            End Try
        Else
            Dim redirected, cookieAdded As Boolean

            sessionID = pSessionIDManager.CreateSessionID(context)
            pSessionIDManager.SaveSessionID(context, sessionID, redirected, cookieAdded)

            If redirected Then Return
        End If
        If sessionData Is Nothing Then
            ' Identify the session as a new session state instance. Create a new SessionItem
            ' and add it to the local Hashtable.
            isNew = True

            sessionData = New SessionItem()

            sessionData.Items = New SessionStateItemCollection()
            sessionData.StaticObjects = SessionStateUtility.GetSessionStaticObjects(context)
            sessionData.Expires = DateTime.Now.AddMinutes(pTimeout)

            Try
                pHashtableLock.AcquireWriterLock(Int32.MaxValue)
                pSessionItems(sessionID) = sessionData
            Finally
                pHashtableLock.ReleaseWriterLock()
            End Try
        End If

        ' Add the session data to the current HttpContext.
        SessionStateUtility.AddHttpSessionStateToContext(context, _
                         New HttpSessionStateContainer(sessionID, _
                                                      sessionData.Items, _
                                                      sessionData.StaticObjects, _
                                                      pTimeout, _
                                                      isNew, _
                                                      pCookieMode, _
                                                      SessionStateMode.Custom, _
                                                      False))

        ' Execute the Session_OnStart event for a new session.
        If isNew Then RaiseEvent Start(Me, EventArgs.Empty)
    End Sub


    '
    ' Event for Session_OnStart event in the Global.asax file.
    '
Public Event Start As EventHandler

Berlaku untuk

Lihat juga

Gambaran Umum Status Sesi ASP.NET

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