Exploring the .NET PropertyGrid in depth

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

            Customer c1 = new Customer();
            c1.Name = "Bala";
            c1.Gender = genderValues.Male; 
            propertyGrid1.SelectedObject = c1;
        }

        private void propertyGrid1_PropertyValueChanged(object s, PropertyValueChangedEventArgs e)
        {
            GridItem itm = e.ChangedItem;
           // ;

            if (itm.Label == "Gender")//Checking for the property Gender 
            {
                if (itm.Value.ToString()=="Male"  ) // Checking for the valu eof the Gender property
                {
                    string[] s1 ={ "M-10000", "M-20000" };
                    HE_GlobalVars._LovList = s1;               
                }
                else
                {
                    string[] s2 ={ "F-10000", "F-20000" };
                    HE_GlobalVars._LovList = s2; 
                }
            }
            
        }
    }

    [DefaultProperty("Name")]
    public class Customer
    {

        private string _Name;
        private genderValues _gender;
        private string _lov;

        [Category("PERSONAL_CAT")]
        public string Name
        {
            get
            {
                return (_Name);
            }
            set
            {
                _Name=value;
            }
        }


        [Category("PERSONAL_CAT")]
        public genderValues  Gender
        {
            get
            {
                return (_gender);
            }
            set
            {
                _gender = value;
            }
        }

        [TypeConverter(typeof(LovList)), CategoryAttribute ("PERSONAL_CAT")]
        public string LOV
        {
            get
            {
                return (_lov );
            }
            set
            {
                _lov = value;
            }
        }


    }

    public enum genderValues
    {
        Male,
        Female
    }

    //Class for setting the Drop down values
    internal class HE_GlobalVars
    {
        internal static string[] _LovList;
    }


    public class LovList : StringConverter
    {
        public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
        {
            //Default values for the drop down is set here
            string[] s1 ={ "M-10000", "M-20000" };
            HE_GlobalVars._LovList = s1;   
            //true means show a combobox
            return true;
        }

        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
        {
            //true will limit to list. false will show the list, 
            //but allow free-form entry
            return true;
        }

        public override System.ComponentModel.TypeConverter.StandardValuesCollection
               GetStandardValues(ITypeDescriptorContext context)
        {
            return new StandardValuesCollection(HE_GlobalVars._LovList);
        }
    }




}