发布后会话丢失（在开发机上工作）

Question

I'm working on a Holiday Tracker application and one specific thing is killing the whole "page life cycle".

In my User Scheduler, where every user can insert his vacation, sometimes it's working (and so he can insert/delete/edit and view his vacation). There is also a Vacation page (same story there, just with a grid).

But sometimes the session that is set is getting lost. If I'm debugging with Visual Studio 2012, it's working. But if I publish the application, it's not working. It just gets lost somehow

Code in Global.asax.cs

    void Session_Start(object sender, EventArgs e) {
        // Code that runs when a new session is started
        if (HttpContext.Current.User != null && HttpContext.Current.User is HtUser)
        {
            HtUser user = (HtUser)HttpContext.Current.User;
            Session["UserId"] = user.UserId;
            if(user.HtDepartments.Any() && user.HtDepartments.First().HtBusinessUnit != null){
                int BusinessUnitId  = user.HtDepartments.First().HtBusinessUnit.BusinessUnitId;
                Session["BusinessUnitId"] = BusinessUnitId;
            }

        }
    }

I think that maybe the error is there.

Scheduler:

<%--<telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" LoadingPanelID="RadAjaxLoadingPanel1">--%>

        <div style="float: left; margin-right: 20px; margin-bottom: 10px;">
            <asp:Label runat="server" Text="Unbooked vacation:"></asp:Label>
            <asp:Label ID="lblBookedVacation" runat="server" Text=""></asp:Label>
        </div>

        <div style="float: right; margin-right: 20px; margin-bottom: 10px;">
            <asp:Button runat="server" ID="btnExport" Text="Export to Lotus Notes" OnClientClick="Export(this, event); return false;" OnClick="btnExport_Click"></asp:Button>
        </div>
        <div style="clear: both;" />
        <div>
            <telerik:RadScheduler runat="server" ID="RadScheduler1" Width="750px" Height="700px"
                DayStartTime="07:00:00" DayEndTime="18:00:00" SelectedView="WeekView" DataSourceID="dsVactationDays"
                DataKeyField="VacationDayId" DataSubjectField="Title" DataStartField="FromDate" DataEndField="ToDate" OnAppointmentUpdate="RadScheduler1_AppointmentUpdate"
                OnAppointmentInsert="RadScheduler1_AppointmentInsert"
                OnRecurrenceExceptionCreated="RadScheduler1_RecurrenceExceptionCreated" OnTimeSlotCreated="RadScheduler1_TimeSlotCreated" OnAppointmentDataBound="RadScheduler1_AppointmentDataBound">
                <AdvancedForm Modal="true"></AdvancedForm>
                <TimelineView UserSelectable="false"></TimelineView>
                <TimeSlotContextMenuSettings EnableDefault="true"></TimeSlotContextMenuSettings>
                <AppointmentContextMenuSettings EnableDefault="true"></AppointmentContextMenuSettings>
            </telerik:RadScheduler>
        </div>
        <asp:TextBox ID="txtID" runat="server"></asp:TextBox>
        <asp:DataGrid runat="server" DataSourceID="dsVactationDays" AutoGenerateColumns="true"></asp:DataGrid>

        <asp:EntityDataSource ID="dsVactationDays" runat="server" ConnectionString="name=HolidayTrackerEntities" DefaultContainerName="HolidayTrackerEntities"
            EnableDelete="True" EnableFlattening="False" EnableInsert="True" EnableUpdate="True" EntitySetName="HtVacationDays"
            Where="it.UserId == @UserId">
            <WhereParameters>
                <asp:SessionParameter DbType="Int32" Name="UserId" SessionField="UserId" />
            </WhereParameters>
        </asp:EntityDataSource>

    <%--</telerik:RadAjaxPanel>--%>

Code behind

   private const int AppointmentsLimit = 1;
       // private HtUser paramUser;
        private HtUser user;
        private HtUser User
        {
            get
            {
                if (user == null)
                {
                    user = HtUser.INIT_USER(this.Page, false);
                }
                return user;
            }
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack) {
                if (this.User != null) {
                    updateUnbookedVacationNotification();
                }
            }
            txtID.Text = Session["UserId"] != null ? Session["UserId"].ToString() : "FUUUUU";
        }

        private void updateUnbookedVacationNotification() {
            double avAmount = User.GetAnnualVacationAmountByYear(this.RadScheduler1.SelectedDate.Year);
            double bookedAmount = User.GetBookedVacation(this.RadScheduler1.SelectedDate.Year);
            this.lblBookedVacation.Text = (avAmount - bookedAmount).ToString();
        }

        //private void getParameters()
        //{
        //    if (Page.Request["UserId"] != null)
        //    {
        //        int userId = Constants.TryConvert(Page.Request["userId"], this.Page);
        //        this.paramUser = HtUser.GetById(userId);
        //    }

        //}
        private bool ExceedsLimit(Appointment apt)
        {
            int appointmentsCount = 0;
            foreach (Appointment existingApt in RadScheduler1.Appointments.GetAppointmentsInRange(apt.Start, apt.End))
            {
                if (existingApt.Visible)
                    appointmentsCount++;
            }

            return (appointmentsCount > AppointmentsLimit - 1);
        }

        private bool AppointmentsOverlap(Appointment appointment)
        {
            if (ExceedsLimit(appointment))
            {
                foreach (Appointment a in RadScheduler1.Appointments.GetAppointmentsInRange(appointment.Start, appointment.End))
                {
                    if (a.ID != appointment.ID)
                    {
                        return true;
                    }
                }
            }



            return false;
        }

        private void RegisterScript()
        {
            Label1.Text = "Invalid move! There are appointments arranged for this time period.";
            ScriptManager.RegisterClientScriptBlock(this, GetType(), "LabelUpdated",
                    "$telerik.$('.lblError').show().animate({ opacity: 0.9 }, 2000).fadeOut('slow');", true);
        }


        protected void RadScheduler1_AppointmentInsert(object sender, SchedulerCancelEventArgs e)
        {
            if (ExceedsLimit(e.Appointment))
            {
                e.Cancel = true;
                RegisterScript();
            }
            else
            {
                int id = HtUser.GetUserIdByLogin(Page.User.Identity.Name);
                e.Appointment.Attributes.Add("UserId", id.ToString());
            }

        }

Login Part Global.asax.cs

protected void WindowsAuthentication_OnAuthenticate(Object source, WindowsAuthenticationEventArgs e)
        {
            if (Request.Cookies.Get(Constants.AUTHORIZATION_COOKIE_NAME) != null)
                return;

            String strUserIdentity;
            FormsAuthenticationTicket formsAuthTicket;
            HttpCookie httpCook;
            String strEncryptedTicket;
            AdLookup adLookup = new AdLookup();

            strUserIdentity = e.Identity.Name;

            bool loggedIn = false;
            String email = null;
            String role = null;

            email = strUserIdentity; 
            HtUser userInfo = null;
            if (email != null && email != "")
            {
                userInfo = HtUser.GetByLogin(e.Identity, email);

                if (userInfo != null && userInfo.UserName.Length > 0)
                {
                    loggedIn = true;
                    role = HtUser.GetUserRoleString(userInfo);
                }
                //Checks if user is in domain
                else
                {
                    userInfo = adLookup.GetAdUserByUsername(HtUser.getUserNameFromDomainString(email));
                    if (userInfo != null && userInfo.UserName.Length > 0)
                    {
                        loggedIn = true;
                        role = UserRoles.User;
                    }
                }
            }
            //}

            if (loggedIn)
            {
                formsAuthTicket = new FormsAuthenticationTicket(1, email, DateTime.Now,
                                                                DateTime.Now.AddMinutes(60), false, role);
                strEncryptedTicket = FormsAuthentication.Encrypt(formsAuthTicket);
                httpCook = new HttpCookie(Constants.AUTHORIZATION_COOKIE_NAME, strEncryptedTicket);
                Response.Cookies.Add(httpCook);
                HttpContext.Current.User = userInfo;
            }
            else
            {
                HttpContext.Current.User = null;
            }

Web.Config

<?xml version="1.0" encoding="utf-8"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <connectionStrings>
    <add name="ApplicationServices" connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnetdb.mdf;User Instance=true" providerName="System.Data.SqlClient" />
    <add name="ConnectionString" connectionString="Data Source=ch-s-0008086;Initial Catalog=HolidayTracker;Persist Security Info=True;User ID=sa;Password=123.;MultipleActiveResultSets=True" providerName="System.Data.SqlClient" />
    <add name="HolidayTrackerConnectionString" connectionString="Data Source=ch-s-0008086;Initial Catalog=HolidayTracker;User ID=sa;Password=123." providerName="System.Data.SqlClient" />
    <add name="HolidayTrackerEntities" connectionString="metadata=res://*/Model.HolidayTracker.csdl|res://*/Model.HolidayTracker.ssdl|res://*/Model.HolidayTracker.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=ch-s-0008086;Initial Catalog=HolidayTracker;Persist Security Info=True;User ID=sa;Password=123.;MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" />
    <add name="HolidayTrackerEntities1" connectionString="metadata=res://*/DAL.HTTracker.csdl|res://*/DAL.HTTracker.ssdl|res://*/DAL.HTTracker.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=ch-s-0008086;initial catalog=HolidayTracker;user id=sa;password=123.;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />
  </connectionStrings>
  <appSettings>
    <add key="LDAP_SERVER_NAME" value="asdasdasd" />
    <add key="LDAP_USERNAME" value="asdasdas" />
    <add key="LDAP_PASSWORD" value="asdasdasd" />
  </appSettings>
  <system.web>
    <compilation debug="true" targetFramework="4.0">
      <assemblies>
        <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
        <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.Speech, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
        <add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Runtime.Serialization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.Data.DataSetExtensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
      </assemblies>
    </compilation>
    <customErrors mode="Off" />
    <authentication mode="Windows" />
    <identity impersonate="false" />
    <httpHandlers>
      <add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false" />
      <add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false" />
      <add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false" />
      <add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false" />
      <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false" />
    </httpHandlers>
    <pages>
      <controls>
        <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI" />
      </controls>
    </pages>
    <httpModules>
      <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" />
      <add name="RadCompression" type="Telerik.Web.UI.RadCompression" /></httpModules>
  </system.web>
  <system.webServer>
    <validation validateIntegratedModeConfiguration="false" />
    <modules runAllManagedModulesForAllRequests="true">
      <remove name="RadUploadModule" />

      <remove name="RadCompression" /><add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" preCondition="integratedMode" />
      <add name="RadCompression" type="Telerik.Web.UI.RadCompression" preCondition="integratedMode" /></modules>
    <handlers>
      <remove name="ChartImage_axd" />
      <remove name="Telerik_Web_UI_SpellCheckHandler_axd" />
      <remove name="Telerik_Web_UI_DialogHandler_aspx" />
      <remove name="Telerik_RadUploadProgressHandler_ashx" />
      <remove name="Telerik_Web_UI_WebResource_axd" />
      <add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode" />
      <add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode" />
      <add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode" />
      <add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode" />
      <add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode" />
    </handlers>
    <directoryBrowse enabled="true" />
  </system.webServer>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="v11.0" />
      </parameters>
    </defaultConnectionFactory>
  </entityFramework>
</configuration>

If you need something more, just let me know.

Answer 1

If you are using InProc session storage and publish your application, the application pool gets recycled by the IIS and the w3wp.exe process respawns. Your session data is then lost immediately.

If that is the problem you're having, and you want to avoid it, there are options for storing your session elsewhere (such as in a database). See the MSDN article on ASP.NET Session-State Modes for more information.