I have created a User Control with 4 check boxes(server control). I want to allow to check only one checkbox out of four.
The user control is loaded on page dynamically.I page may have multiple same UserConrol.
Use a Radio Button Control. Checkboxes are meant for multiple selections, whereas Radio Buttons are meant for single selections. Then with the Radio Buttons you can specify the
GroupName for those controls to limit the selection to a single item.