hi Developers ,
 i have done the Module for Online Examination as i want.
now i want to Calculate the Result and Marks of the Test.
i.E 
1. how many Answers is Correct
2.how many Answers is InCorrect
3.how many marks Got.
that's all
i have tried with below query but i cant able to get the exact answer . below am my adding my code . if anyone know how to done this please guide me to i am done this task.
 protected void Button1_Click(object sender, EventArgs e)
    {
         try
        {
            LoadQuestion();
        }
  }
---> Load Question Function for bind Next Question
protected void LoadQuestion()
    {
        if (Questions.Tables[0].Rows.Count > 0)
        {
            SqlConnection con = Connection.DBConn();
            //Load Question;
            DataRow DR = Questions.Tables[0].Rows[0];
            Question.Text = DR[0].ToString() + " of " + totalQs;
            sno = DR[0].ToString();
            string total = sno;
            string no = "1";
            decimal SumofTotalCosst = Convert.ToDecimal(total) - Convert.ToDecimal(no.ToString());
            decimal ccc;
            string insert = "update tbl_Question set Marks='5' where id='" + SumofTotalCosst + "'";
            SqlCommand com = new SqlCommand(insert, con);
            com.ExecuteNonQuery();
            TestName.Text = DR[0].ToString();
            TestNo.Text = tno;
            Questionlbl.Text = DR[6].ToString();
            rbtnAns.Items.Clear();
            rbtnAns.Items.Add(DR[8].ToString());
            rbtnAns.Items.Add(DR[9].ToString());
            rbtnAns.Items.Add(DR[10].ToString());
            rbtnAns.Items.Add(DR[11].ToString());
            lblKeyfacts.Text = DR[12].ToString();
            lblExplanation.Text = DR[13].ToString();
            lblObliviating.Text = DR[14].ToString();
            Questions.Tables[0].Rows.Remove(DR);
            if (Questionlbl.Text.Equals(totalQs.ToString()))
            {
                IsLastQs = true;
            }
        }
        else
        {
            //End Of File;
            //Response.Write("<script>alert('Thanks For Your Presence! You Can Leave Now.')</script>");
            Session.Abandon();
            RedirectToResults();
        }
    }
Thanks with
Paul.S
"Man becomes what he Thinks about"