Please check this thread out. It describes the way to do two way databinding for a RadTextBox. Two way databinding with other RAD controls is handled similarly.
For the OpenAccess part you will have to extend your DAL with additional code that could handle the CRUD operations of your entities. Probably the best approach is to use some of the data access patterns that best suits your needs. There are numerous examples on the web.
You can have a look at this help article in order to see how to work with object and the OpenAccessContext.
Hope that helps and don't hesitate to ask if you need further guidance.
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