This .NET class wraps the AcDbDataCell::CellType ObjectARX enum. 

These values specify the data types that can be represented by an DataCell object.

Public Enum CellType
  Unknown
  Integer
  Double
  CharPtr
  Point
  ObjectId
  HardOwnerId
  SoftOwnerId
  HardPtrId
  SoftPtrId
  Bool
  Vector
End Enum

public enum CellType {
  Unknown,
  Integer,
  Double,
  CharPtr,
  Point,
  ObjectId,
  HardOwnerId,
  SoftOwnerId,
  HardPtrId,
  SoftPtrId,
  Bool,
  Vector
}