This exception indicates that the .NET execution engine found some invalid code or metadata in a program. This can be caused by a compiler bug that generates malformed MSIL (Microsoft Intermediate Language) instructions.

public sealed class InvalidProgramException : SystemException {
// Public Constructors
   public InvalidProgramException( );
   public InvalidProgramException(string message);
   public InvalidProgramException(string message, Exception inner);
}

Hierarchy

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