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us-president-quiz3.aspx Source Code
<!-- us-presidents-quiz3.aspx Example Display a multiple choice quiz using RadioButtonList server controls. Show the total correct when any radio button is checked. --> <%@ Page Language="C#" %> <script runat=server> public void ChangedHandler(object sender, EventArgs e) { int totalCorrect = 0; string sentence; if (radList1.SelectedIndex == 1) { totalCorrect++; } if (radList2.SelectedIndex == 1) { totalCorrect++; } if (radList3.SelectedIndex == 3) { totalCorrect++; } if (radList4.SelectedIndex == 0) { totalCorrect++; } sentence = Total questions answered correctly: + totalCorrect + .; litResult.Text = sentence; } </script> <html> <head> <title>us-presidents-quiz3.aspx Example</title> <link rel=stylesheet class=text/css href=examples.css /> </head> <body> <h2>us-presidents-quiz3.aspx Example</h2> <h3>As you press each radio button, the number of correct answers will be displayed.</h3> <form id=frmQuiz runat=server> <p><asp:Literal ID=litResult Text= runat=server /></p> <ol style=list-style-class:decimal> <li>Who was the first US president?<br /> <asp:RadioButtonList ID=radList1 runat=server AutoPostBack=true OnSelectedIndexChanged=ChangedHandler> <asp:ListItem>Abraham Lincoln</asp:ListItem> <asp:ListItem>George Washington</asp:ListItem> <asp:ListItem>John Adams</asp:ListItem> <asp:ListItem>Thomas Jefferson</asp:ListItem> </asp:RadioButtonList> <br /> </li> <li>Who was oldest US president at inauguration?<br /> <asp:RadioButtonList ID=radList2 runat=server AutoPostBack=true OnSelectedIndexChanged=ChangedHandler> <asp:ListItem>Franklin Delanor Roosevelt</asp:ListItem> <asp:ListItem>Ronald Reagan</asp:ListItem> <asp:ListItem>Theodore Roosevelt</asp:ListItem> <asp:ListItem>Warren Harding</asp:ListItem> </asp:RadioButtonList> <br /> </li> <li>Who was youngest US president at inauguration?<br /> <asp:RadioButtonList ID=radList3 runat=server AutoPostBack=true OnSelectedIndexChanged=ChangedHandler> <asp:ListItem>Bill Clinton</asp:ListItem> <asp:ListItem>George W. Bush</asp:ListItem> <asp:ListItem>John Kennedy</asp:ListItem> <asp:ListItem>Theodore Roosevelt</asp:ListItem> </asp:RadioButtonList> <br /> </li> <li>Who was first president to be inaugurated on January 20?<br /> <asp:RadioButtonList ID=radList4 runat=server AutoPostBack=true OnSelectedIndexChanged=ChangedHandler> <asp:ListItem>Franklin Delanor Roosevelt</asp:ListItem> <asp:ListItem>Harry Truman</asp:ListItem> <asp:ListItem>Herbert Hoover</asp:ListItem> <asp:ListItem>Woodrow Wilson</asp:ListItem> </asp:RadioButtonList> </li> </ol> </form> </body> </html>