I'm working on a GridView and I'm databinding a List<BusinessObject> to it. All is well until I tweaked some code and suddenly, I got this System.Web.HttpException with message A data item was not found in the container. The container must either implement IDataItemContainer, or have a...

ASP.NET 2.0 GridView comes with DataKeyNames property as part of its improved security. It is the equivalent of using DataKeyField in ASPNET 1.0 to store the PKID used in databinding. Data will be saved as part of the grid's viewstate and is therefore not readily available to the client browsers as text...