Set RadioButtonList First ListItem as Selected
<p>I am using jquery and c# to dynamically set a radiobuttonlist listitem to selected. I want to create a reset-type button to reset the radiobuttonlist selected item back to the first item in the list.</p>

<p>jQuery/jsTree function currently reseting textbox and hidden field:</p>

<pre><code>$('#ContentPlaceHolder1_hfNodeID').val('');
$('.txtPage').val('');
$('.rblContentTypesGetAll').val();
$('.contentPageForm').show(),
</code></pre>

<p><code>.rblContentTypesGetAll</code> is the radiobuttonlist i want to reset (or select the top most listitem).</p>

<p>HTML of the form:</p>

<pre><code> &lt;asp:Panel ID="PagesForm" CssClass="contentPageForm" runat="server"&gt;
 &lt;asp:HiddenField ID="hfNodeID" runat="server" Value="" /&gt;
 &lt;table&gt;
     &lt;tr&gt;
        &lt;td&gt;Page&lt;/td&gt;
        &lt;td&gt;&lt;asp:TextBox ID="txtPage" CssClass="txtPage" runat="server" /&gt;&lt;span class="validate"&gt;*&lt;/span&gt;&lt;br /&gt;
        &lt;asp:RequiredFieldValidator ID="rfvPage" runat="server" CssClass="validate" ControlToValidate="txtPage" Display="Dynamic" ErrorMessage="Page Name Required" ValidationGroup="page" /&gt;&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;Content Type&lt;/td&gt;
        &lt;td&gt;
            &lt;asp:RadioButtonList id="rblContentTypesGetAll" CssClass="rblContentTypesGetAll" OnLoad="rblContentTypesGetAll_Load"  runat="server" &gt;
            &lt;/asp:RadioButtonList&gt;
        &lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt; &lt;asp:Button ID="Submit" runat="server" OnClick="PageSubmit_Click" Text="Save" ValidationGroup="page" /&gt;
             &lt;asp:Button ID="Cancel" runat="server" OnClick="Cancel_Click" Text="Cancel" /&gt;
        &lt;/td&gt;
    &lt;/tr&gt;
 &lt;/table&gt;
 &lt;/asp:Panel&gt;
</code></pre>
