Never mind. Figured out I need to set "Binding". I guess I'm really confused about what "MappingName" and "Binding" are. And when are they matter when using VisibleColumn or UnboundVisibleColumn. Can you clarify? Thanks.
JSJayapradha S Syncfusion Team April 14, 2014 01:33 PM UTC
visible column is derived from VisibleColumn and it is used to display
additional information which is not present in underlying data by handling
and Binding used to reflect information from underlying data. When MappingName
is used data will be reflected using C# reflection concept and when Binding
property is used, data will be reflected using BindingWrappers. In some cases,
we could not reflect the data based on MappingName. So those cases, we have to
use Binding property in VisibleColumn.