Session Cookie ASP.Net

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  4. Use session to store action time (VB net)
<%@ Page Language="VB" %>

    Sub Page_Load()
        If Not Page.IsPostBack Then
            ResetStartTime()
        End If
    End Sub
    
    Protected Sub btnAgain_Click(ByVal sender As Object, ByVal e As System.EventArgs)
        ResetStartTime()
    End Sub
    
    Sub ResetStartTime()
        Session("StartTime") = DateTime.Now
    End Sub
    
    
    Protected Sub valAnswer_ServerValidate(ByVal source As Object, ByVal args As System.Web.UI.WebControls.ServerValidateEventArgs)
        Dim startTime As DateTime = CType(Session("StartTime"), DateTime)
        If startTime.AddSeconds(5) > DateTime.Now Then
            args.IsValid = True
        Else
            args.IsValid = False
        End If
    End Sub



    Timed Test


    
    

    
    


    You have 5 seconds to answer the following question:
    


    
            id="lblQuestion"
        Text="What was Aristotle's first name?"
        AssociatedControlID="txtAnswer"
        Runat="server" />
    
            id="txtAnswer"
        Runat="server" />    
            id="valAnswer"
        Text="(You answered too slowly!)"
        OnServerValidate="valAnswer_ServerValidate"
        Runat="server"  />
    
    
    
            id="btnSubmit"
        Text="Submit"
        Runat="server" />
    
            id="btnAgain"
        Text="Try Again!"
        CausesValidation="false"
        OnClick="btnAgain_Click"
        Runat="server" />