title: only one radiobutton selection in repeater
body: <p>I want to select only one radio button but I cant do this.
  Here is my code:</p>
  
  <pre><code>&lt;asp:Repeater ID="Repeater_secenekler" runat="server" DataSource='&lt;%#Eval("Secenekler")%&gt;'&gt;
     &lt;HeaderTemplate&gt;
         &lt;table&gt;
     &lt;/HeaderTemplate&gt;
     &lt;ItemTemplate&gt;
         &lt;tr&gt;
             &lt;td style="margin-left: 20px;"&gt;
                 &lt;asp:CheckBox ID="CheckBox" runat="server" Text='&lt;%#Eval("OptionName")%&gt;' Visible='&lt;%# Eval("TypeId").ToString() == "1" %&gt;' /&gt;
                 &lt;asp:RadioButton ID="RadioButton" runat="server" Text='&lt;%#Eval("OptionName")%&gt;' Visible='&lt;%# Eval("TypeId").ToString() == "2" %&gt;'
                      GroupName="RadioButtonGrup" /&gt;
             &lt;/td&gt;
         &lt;/tr&gt;
     &lt;/ItemTemplate&gt;
     &lt;FooterTemplate&gt;
         &lt;/table&gt;
     &lt;/FooterTemplate&gt;
  &lt;/asp:Repeater&gt;
  </code></pre>
  
  <p>I can select all radio button with same groupname but I dont want this. I want only one selection.</p>
  
  <p>How can I do this.
  Thanks.</p>