RadioButtons place on a page inside a repeating control (repeater/datalist/datagrid), you set the group but they are still all individually selectable.

I have come across this problem before, which was fixed using some client side script added to the radiobuttons, but this had to be done for each radiobutton group as I added them and was a bit of a pain.

I have recently found a much better solution here -> http://www.codeproject.com/KB/webforms/How_group_RButtons.aspx

Works perfectly well. Unstructions:

1) Just download the zip file at the top of the page.

2) Unzip and place the file (GroupRadioButton.dll) into your bin folder.

3) Add a reference to the assembly into your web.config or .aspx page as below:

<%@ Register TagPrefix=”vs” Namespace=”Vladsm.Web.UI.WebControls” Assembly=”GroupRadioButton” %>

Use the control on your page as you would a RadioButton

<vs:GroupRadioButton id=”MyRbn” runat=”server” GroupName=”MyRbnGrp” />

Thats it. Brilliant 🙂

Kudos to Vladimir Smirnov.