Time limit validation (C#) : Date Time « Development




<%@ Page Language="C#" %>



<script runat="server">



    void Page_Load()

    {

        if (!Page.IsPostBack)

            ResetStartTime();

    }

    

    void btnAgain_Click(Object sender, EventArgs e)

    {

        ResetStartTime();

    }

    

    void ResetStartTime()

    {

        Session["StartTime"] = DateTime.Now;

    }

    

    

    void valAnswer_ServerValidate(Object source, ServerValidateEventArgs args)

    {

        DateTime startTime = (DateTime)Session["StartTime"];

        if (startTime.AddSeconds(5) > DateTime.Now)

            args.IsValid = true;

        else

            args.IsValid = false;

    }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >

<head id="Head1" runat="server">

    <title>Timed Test</title>

</head>

<body>

    <form id="form1" runat="server">

    <div>

    

    <p>

    You have 5 seconds to answer the following question:

    </p>

    

    <asp:Label

        id="lblQuestion"

        Text="What was Aristotle's first name?"

        AssociatedControlID="txtAnswer"

        Runat="server" />

    <br />

    <asp:TextBox

        id="txtAnswer"

        Runat="server" />    

    <asp:CustomValidator

        id="valAnswer"

        Text="(You answered too slowly!)"

        OnServerValidate="valAnswer_ServerValidate"

        Runat="server"  />

    

    <br /><br />

    

    <asp:Button

        id="btnSubmit"

        Text="Submit"

        Runat="server" />

    

    <asp:Button

        id="btnAgain"

        Text="Try Again!"

        CausesValidation="false"

        OnClick="btnAgain_Click"

        Runat="server" />

    

    </div>

    </form>

</body>

</html>
Time limit validation (C#) : Date Time « Development « ASP.Net
