Adding a combo box to a property grid

[ChrisHunter]

Hi

i need to add a combo box to a property grid that can be populated with the result of an sql statement, i can more than likely populate it when i come to it but i have no idea how to add the combo box.

Currently i am creating the items in my property grid which just need to be a textfield like so:

private int _objTypeID;

        [CategoryAttribute("Object State Defaults"), DescriptionAttribute("Object type ID")]        
        public int ObjectTypeID
        {
            get
            {
                return _objTypeID;
            }
            set
            {
                _objTypeID = value;
            }
        }

But i have no idea how to add combo boxes to it.
Any help is much appreciated.

Thanks in advanced

Chris