PropertyGrid: DropDown Property

You may want to add a dropdown to your property grid. If you do then the below code is what you will need to create the property. You will also need the editor.

Build a DropDown Property Type

 public class DropDownList : INotifyPropertyChanged
{
      private dynamic _values;
      private dynamic selectedItem;
      public event PropertyChangedEventHandler PropertyChanged;
      public event PropertyValueChangedEventHandler PropertyValueChanged;

      public DropDownList(String name, PropertyGrid pg)
      {
            PropertyName = name;
            PG = pg;
      }

      private String PropertyName { get; set; }
      private PropertyGrid PG { get; set; }

      public dynamic Values
      {
            get
            {
                  return _values;
            }
            set
            {
                  if (value != null)
                        _values = value;
            }
      }

      public string ValueMember { get; set; }
      public string DisplayMember { get; set; }

      [Browsable(false)]
      public dynamic SelectedItem
      {
            get
            {
                  return selectedItem;
            }
            set
            {
                  String oldValue = selectedItem;
                  selectedItem = value;

                  if (PropertyChanged != null)
                        PropertyChanged(this, new PropertyChangedEventArgs(PropertyName));

                  if (PG != null)
                  {
                        if (PropertyValueChanged != null)
                              PropertyValueChanged(this, new PropertyValueChangedEventArgs(PG.SelectedGridItem, oldValue));
                  }
            }
      }

      public override string ToString()
      {
            return SelectedItem;
      }
}