[Mono-list] Parametized generics puzzler

ebichete ebichete at yahoo.com
Wed Jan 28 07:40:42 EST 2009

Does anyone know why the following code doesn't "do the expected thing" ? I
think I've properly coded my intent in C# but I could be wrong.

I'm trying to get the base class static methods to act differently based on
static data in the derived classes.

- Edward -

using System.Collections.Generic;

public class Vehicle {
	protected const string REG_TYPE = "";
	protected static string TAX_CAT = "";
	public static string getRegType() where T : Vehicle
		return T.REG_TYPE;
	public static string getTaxCategory() where T : Vehicle
		return T.TAX_CAT;

public class Truck : Vehicle {
	protected new const string REG_TYPE = "G";
	protected new static string TAX_CAT = "J4";

public class GenericsBug {
	public static void Main(string[] args)
		System.Console.WriteLine("Registration Class: " + Truck.getRegType());
		System.Console.WriteLine("Tax Category: " + Truck.getTaxCategory());

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