javascript - after removing radio button selected value from js in aspx.cs selected value presists -

i have asp radio button list control below:

<asp:radiobuttonlist id="radio2" runat="server" enableviewstate="false">                 <asp:listitem  text="yes" value="0"></asp:listitem>                 <asp:listitem  text="no" value="1" selected="true"></asp:listitem>             </asp:radiobuttonlist> <asp:button id="btnsubmit" runat="server" text="submit" onclick="btnsubmit_click" /> 

when page loads on browser select yes option radio. console remove checked property of this:

$("#radio2 input[type='radio']").prop("checked",false); 

now if try access radio button list on click of button submit below

protected void btnsubmit_click(object sender, eventargs e)         {             foreach (listitem itemrow in radio2.items)             {                 if (itemrow.selected)                 { }             }         } 

here yes itemrow got selected value true while should false.

what requirement ? please explain properly.
itemrow got selected value true because,only page load time clearing checked property in script. in design written
"<asp:listitem text="no" value="1" selected="true"></asp:listitem>"
thats why takes default value of radiobutton list. remove tht selected="true" not take default value.