Add | Adds a data field to the union data type.
 
 DISPID (Dispatch ID): 
 For more information, see Add in .NET Reference.  | 
  AsEnumerationDataType | The current data type expressed as enumeration data type.
 
 DISPID (Dispatch ID): 
 For more information, see AsEnumerationDataType in .NET Reference.  | 
  AsOpaqueDataType | The current data type expressed as opaque data type.
 
 DISPID (Dispatch ID): 
 For more information, see AsOpaqueDataType in .NET Reference.  | 
  AsPrimitiveDataType | The current data type expressed as primitive data type.
 
 DISPID (Dispatch ID): 
 For more information, see AsPrimitiveDataType in .NET Reference.  | 
  AsSequenceDataType | The current data type expressed as sequence data type.
 
 DISPID (Dispatch ID): 
 For more information, see AsSequenceDataType in .NET Reference.  | 
  AsStructuredDataType | The current data type expressed as structured data type.
 
 DISPID (Dispatch ID): 
 For more information, see AsStructuredDataType in .NET Reference.  | 
  AsUnionDataType | The current data type expressed as union data type.
 
 DISPID (Dispatch ID): 
 For more information, see AsUnionDataType in .NET Reference.  | 
  Clone | Creates a new object that is a copy of the current instance.
 
 DISPID (Dispatch ID): 
 For more information, see Clone in .NET Reference.  | 
  Equals | Determines whether the specified object is equal to the current object.
 
 DISPID (Dispatch ID): 
 For more information, see Equals in .NET Reference.  | 
  GetEnumerator | 
 DISPID (Dispatch ID): -4 
 For more information, see GetEnumerator in .NET Reference.  | 
  GetHashCode | Returns a hash code for the current object.
 
 DISPID (Dispatch ID): 
 For more information, see GetHashCode in .NET Reference.  | 
  GetObjectData | 
 DISPID (Dispatch ID): 
 For more information, see GetObjectData in .NET Reference.  | 
  GetType | Gets the Type of the current instance.
 
 DISPID (Dispatch ID): 
 For more information, see GetType in .NET Reference.  | 
  Remove | Removes a data field from the union data type.
 
 DISPID (Dispatch ID): 
 For more information, see Remove in .NET Reference.  |