Yes. That is also simple enough. We need to use javascript again. I have changed WebSite80 so that it does what you want and attached it. Open it and find an application that allows only one check box to be checked inside the repeater at a time. The attached application is WebSite80.zip. Download it open it and again you will have to put in the appropriate connection string and field and table name in both Default.aspx and Default.aspx.cs. Run it and you will find what you want.
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