ASP.NET

public class QuizQuestion
    {
        [Key]
        public int QuestionId { get; set; }
        public int CourseId { get; set; }
        public int Order { get; set; }
        public string Question { get; set; }
        public string Choice1 { get; set; }
        public string Choice2 { get; set; }
        public string Choice3 { get; set; }
        public string Choice4 { get; set; }
        public int RightAnswer { get; set; }
    }

using (Html.BeginForm("Submit", "Quiz", FormMethod.Post, new { }))
                        {
                        @Html.AntiForgeryToken()
                        foreach (var item in Model.QuizJustQuestionsDto)
                        {
                        <div class="row">
                            @(item.Order + ". " + item.Question)<br />
                            @Html.RadioButton(item.QuestionId.ToString(), 1) @Html.Label(item.Choice1)<br />
                            @Html.RadioButton(item.QuestionId.ToString(), 2) @Html.Label(item.Choice2)<br />
                            @Html.RadioButton(item.QuestionId.ToString(), 3) @Html.Label(item.Choice3)<br />
                            @Html.RadioButton(item.QuestionId.ToString(), 4) @Html.Label(item.Choice4)
                        </div>
                        }

<pre lang="c#"><pre>namespace XEx05FutureValue
{
    public partial class Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
                for (int i = 50; i <= 500; i += 50)
                    ddlMonthlyInvestment.Items.Add(i.ToString());
        }

        protected void btnCalculate_Click(object sender, EventArgs e)
        {
            if (IsValid)
            {
                int monthlyInvestment = Convert.ToInt32(ddlMonthlyInvestment.SelectedValue);
                decimal yearlyInterestRate = Convert.ToDecimal(txtInterestRate.Text);
                int years = Convert.ToInt32(txtYears.Text);

                decimal futureValue = this.CalculateFutureValue(monthlyInvestment,
                    yearlyInterestRate, years);

                lblFutureValue.Text = futureValue.ToString("c");
            }
        }

        protected decimal CalculateFutureValue(int monthlyInvestment,
        decimal yearlyInterestRate, int years)
        {
            int months = years * 12;
            decimal monthlyInterestRate = yearlyInterestRate / 12 / 100;
            decimal futureValue = 0;
            for (int i = 0; i < months; i++)
            {
                futureValue = (futureValue + monthlyInvestment)
                    * (1 + monthlyInterestRate);
                if (Trace.IsEnabled)
                {
                    Trace.Write({i} {futureValue});
                }
            }
            return futureValue;
        }

        protected void btnClear_Click(object sender, EventArgs e)
        {
            ddlMonthlyInvestment.SelectedIndex = 0;
            txtInterestRate.Text = "";
            txtYears.Text = "";
            lblFutureValue.Text = "";
        }
    }
}