handle controls inside listview

I have databind listview with 2 radio button and 1 textbox inside itemtemplate as shown below
<asp:ListView ID="ListView1" runat="server" DataSourceID="DataSource1"> <ItemTemplate> <div class="class1"> <fieldset class="class2"> <legend>Testing</legend> <p> <asp:RadioButton ID="RadioButton1" AutoPostBack="true" OnCheckedChanged="RadioButton1_CheckedChanged" runat="server" Text="Yes" Checked='<%#Convert.ToBoolean(Eval("IS_SET"))==true? true:false%>' GroupName="group1"/> <asp:RadioButton ID="RadioButton1" AutoPostBack="true" OnCheckedChanged="RadioButton1_CheckedChanged" runat="server" Text="No" Checked='<%#Convert.ToBoolean(Eval("IS_SET"))==true? false:true%>' GroupName=& ...