DropDown in propertygrid

[Tanuja123]

I have a customized propertygrid derived from base propertygrid. Dropdown properties are populated using the following code - objPropertyView.Item.Add(objProperty.Label, _strDefault, _bIsEdit, objProperty.Category, objProperty.Help, true, objProperty.Id, ControlConstants.CONTROL); objPropertyView.Item[objPropertyView.Item.Count - 1].ValueMember = objTable.Columns[ControlConstants.VALUE].ToString(); objPropertyView.Item[objPropertyView.Item.Count - 1].DisplayMember = objTable.Columns[ControlConstants.TEXT].ToString(); objPropertyView.Item[objPropertyView.Item.Count - 1].Datasource = objTable; Now when i press Down key using keyboard for that dropdown ,i am unable to get the next item. Keypress/KeyDown/KeyUp events nor mouse events are raising. How can i move to the next item in dropdown using down /up arrow of keyboard. Any help please..