C#

entity = new Entity();<br />
entity.MyValue = "Hello world !";<br />
propertyGrid1.SelectedObject = entity;<br />
<br />
[Designer(typeof(Entity.EntityDesigner))]<br />
public class Entity : Component<br />
{<br />
	public Entity()<br />
	{<br />
	}<br />
<br />
	private string myValue;<br />
	public  string MyValue<br />
	{<br />
		set { myValue = value; }<br />
		get { return myValue; }<br />
	}<br />
<br />
	public class EntityDesigner : Component<br />
	{<br />
		public EntityDesigner()<br />
		{<br />
		}<br />
<br />
		protected override void PreFilterProperties( IDictionary Properties )<br />
		{<br />
			base.PreFilterProperties( Properties );<br />
			Properties.Remove("MyValue");<br />
		}<br />
	}<br />
}