public static void Register(Type type, params PropertyDescriptor[] customProperties)
{
var baseProvider = TypeDescriptor.GetProvider(type);
var typeDescriptor = new CustomPropertyTypeDescriptor(baseProvider.GetTypeDescriptor(type), customProperties);
TypeDescriptor.AddProvider(new Provider(baseProvider, typeDescriptor), type);
}
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
CustomPropertyTypeDescriptor.Register(typeof(OrderLine),
CalculatedProperty.Create("Total", (OrderLine source) => source.Quantity * source.Price)
);
var form = new Form();
var dg = new DataGridView {
Dock = DockStyle.Fill, Parent = form
};
dg.DataSource = Enumerable.Range(1, 10).Select(n => new OrderLine
{
ItemNo = "Item#" + n,
Quantity = n,
Price = 10 * n
}).ToList();
Application.Run(form);
}
public Provider(TypeDescriptionProvider baseProvider, CustomPropertyTypeDescriptor typeDescriptor)
: base(baseProvider)
{
this.typeDescriptor = typeDescriptor;
}
