Code to inject event handler, without hookup methods.

InjectEventHandler.cs

private void InjectEventHandler()
{
  InjectPropertyChangedField();
  InjectEventDeclaration();
}

private void InjectPropertyChangedField()
{
  //.field private class [System]System.ComponentModel.PropertyChangedEventHandler PropertyChanged
  var field = new FieldDefinition(PropertyChangedFieldName, 
    FieldAttributes.Private, 
    _types.PropertyChangedEventHandler);
  _typeDef.Fields.Add(field);
}

private void InjectEventDeclaration()
{
  // .event [System]System.ComponentModel.PropertyChangedEventHandler PropertyChanged
  // {
  // 	.addon instance void Voodoo.ViewModel.GoalViewModel::add_PropertyChanged(class [System]System.ComponentModel.PropertyChangedEventHandler)
  // 	.removeon instance void Voodoo.ViewModel.GoalViewModel::remove_PropertyChanged(class [System]System.ComponentModel.PropertyChangedEventHandler)
  // }
  var eventDef = new EventDefinition(PropertyChangedFieldName, 
    EventAttributes.None, 
    _types.PropertyChangedEventHandler)
  {
    AddMethod = CreateAddPropertyChangedMethod(),
    RemoveMethod = CreateRemovePropertyChangedMethod()
  };
  _typeDef.Methods.Add(eventDef.AddMethod);
  _typeDef.Methods.Add(eventDef.RemoveMethod);
  _typeDef.Events.Add(eventDef);
}