Storable Data Types

System.Boolean

System.Byte

System.SByte

System.Char

System.Int16

System.UInt16

System.Int32

System.UInt32

System.Int64

System.UInt64

System.Guid (is mapped to a string for some databases)

System.Single

System.Double

System.String

System.Byte[] (not supported by all databases)

System.Decimal

System.DateTime

Additionally, all Enum types are supported and all Nullable<T> types of storable value types. Note that it is not recommended to use Nullable<DateTime> and Nullable<Guid>. Never use Nullable<string>.