This exception signals that the marshaler failed in an attempt to marshal a variant to managed code.

public class InvalidOleVariantTypeException : SystemException {
// Public Constructors
   public InvalidOleVariantTypeException( );
   public InvalidOleVariantTypeException(string message);
   public InvalidOleVariantTypeException(string message, Exception inner);
// Protected Constructors
   protected InvalidOleVariantTypeException(System.Runtime.Serialization.SerializationInfo info,
        System.Runtime.Serialization.StreamingContext context);
}

Hierarchy

System.Object System.Exception(System.Runtime.Serialization.ISerializable) System.SystemException InvalidOleVariantTypeException