RadioButton

RadioButton

From Section 6.4.7 of the book

This example allows you to select a certain method of payment using RadioButtons. Every click on a RadioButton initiates a round-trip, by which the selected payment method is displayed on the page.

RadioButton.aspx

<%@ Page Language="C#" %>
<html>
<head>
  <script Language="C#" Runat="server">
    void RadioChanged(object sender, EventArgs e) {
      label.Text = "Method of payment: ";
      if (cash.Checked) label.Text += cash.Text;
      if (cheque.Checked) label.Text += cheque.Text;
      if (card.Checked) label.Text += card.Text;
    }
  </script>
</head>
<body>
  <form Runat="server">
    <p>Select method of payment:</p>
    <asp:RadioButton ID="cash" Text="cash" GroupName="payment"
      OnCheckedChanged="RadioChanged" AutoPostBack="true"
      Runat="server" /><br>
    <asp:RadioButton ID="cheque" Text="cheque" GroupName="payment"
      OnCheckedChanged="RadioChanged" AutoPostBack="true"
      Runat="server" /><br>
    <asp:RadioButton ID="card" Text="credit card" GroupName="payment"
      OnCheckedChanged="RadioChanged" AutoPostBack="true"
      Runat="server" /><br><br>
    <asp:Label ID="label" Runat="server" />
  </form>
</body>
</html>

Try it

http://dotnet.jku.at/book/samples/6/RadioButton.aspx