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May 13, 2008 01:07 PM|LINK
you make an error on a class attribute persistence.
PerCentValue='<%# DataBinder.Eval(Container, "DataItem.Status") %>'
It's only a initialization (and the value is setup in the first page access). When you perform a postback you lost this value. You need to store it somewhere like viewstate.
Try to remove _PerCentValue attribute and modify property with this one: