ASP.net select only one radio button in extra GridView columns

Hi

I am using the ASP.net markup code below for a GridView that has an extra
5 columns, each containing a radio button.
I want a user to only be able to select one radio button.
How do I do this? At the moment the user can select all 5 at the same time
&nbsp;<asp:GridView ID="GridView1" runat="server" CellPadding="4" 
            ForeColor="#333333" GridLines="None" style="margin-top: 0px">  
            <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
            <Columns> 
                <asp:TemplateField>
                   <ItemTemplate>
                       <asp:RadioButton ID="RadioButton1" runat="server" />
                  </ItemTemplate>
               </asp:TemplateField> 
                      <asp:TemplateField>
                   <ItemTemplate>
                       <asp:RadioButton ID="RadioButton2" runat="server" />
                  </ItemTemplate>
               </asp:TemplateField> 
                      <asp:TemplateField>
                   <ItemTemplate>
                       <asp:RadioButton ID="RadioButton3" runat="server" />
                  </ItemTemplate>
               </asp:TemplateField> 
                      <asp:TemplateField>
                   <ItemTemplate>
                       <asp:RadioButton ID="RadioButton4" runat="server" />
                  </ItemTemplate>
               </asp:TemplateField> 
                      <asp:TemplateField>
                   <ItemTemplate>
                       <asp:RadioButton ID="RadioButton5" runat="server" />
                  </ItemTemplate>
               </asp:TemplateField> 
            </Columns> 
            <EditRowStyle BackColor="#999999" />
            <FooterStyle BackColor="#5D7B9D" ForeColor="White" Font-Bold="True" />  
            <HeaderStyle BackColor="#003366" Font-Bold="True" ForeColor="White" />  
            <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />  
            <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />  
            <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />  
            <SortedAscendingCellStyle BackColor="#E9E7E2" />  
            <SortedAscendingHeaderStyle BackColor="#506C8C" />  
            <SortedDescendingCellStyle BackColor="#FFFDF8" />  
            <SortedDescendingHeaderStyle BackColor="#6F8DAE" />  
        </asp:GridView>

Open in new window

Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

MajorBigDealCommented:
Try giving them all the same GroupName attribute.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAuthor Commented:
thanks very much
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
ASP.NET

From novice to tech pro — start learning today.