RadControls for ASP.NET AJAX RadGrid understands the following bindable property
types:
All primitive types - bool, byte,
sbyte, char, short,
ushort, int,
uint, long,
ulong, decimal,
double, float, DateTime,
etc.
GUID
String
TimeSpan
Enum types
Nullable types
RadGrid uses the static method
RadGrid.IsBindableType() to determine if the property of
an object can be bound.