how to make RequiredFieldValidator control two validate two control
<pre><code>    Are you required applicant?
&lt;asp:CheckBox ID="CheckBox1" runat="server" Text="Yes" /&gt;
&lt;asp:CheckBox ID="CheckBox2" runat="server" Text="No" /&gt;
</code></pre>

<p>Actually this is code, i do not know why they use two Checkbox instead of Checkboxlist, but they told me do not change it. and make the two checkbox required(using RequiredFieldValidator).
I know how to use RequiredFieldValidator, but how can i make RequiredFieldValidator control two Checkbox, only pass if one of them selected</p>
