Sub submit(Source As Object, e As EventArgs)
p1.InnerHtml="Your favorite color is red"
p1.InnerHtml="Your favorite color is green"
p1.InnerHtml="Your favorite color is blue"
<input id="r1" name="col" type="radio" runat="server">Red</input>
<input id="r2" name="col" type="radio" runat="server">Green</input>
<input id="r3" name="col" type="radio" runat="server">Blue</input>
<input type="button" value="提交" OnServerClick="submit" runat="server"/>
<p id="p1" runat="server" />