class1.cs

C#开发教程 由浅入深 配有实例 是初学者的好帮手

using System;
using System.Runtime.Remoting.Contexts;

using System.Threading;

namespace ContextAttribs
{
	[AttributeUsage(AttributeTargets.All)]
	public class FooAttribute : ContextAttribute
	{
		public FooAttribute() : base("Foo") 
		{
			Console.WriteLine("FooAttribute instance ctor");
		}
		static FooAttribute()
		{
			count = 1;
			Console.WriteLine("FooAttribute static ctor");
		}
		public static int Count
		{
			get { return count++; }
		}
		private static int count;
	}

	[Foo]
	public class SomeClass : ContextBoundObject
	{
		public string name;
		public SomeClass(string s)
		{
			name = s;
			Console.WriteLine("{0} created", name);
		}
		public void SomeFunc()
		{
			Console.WriteLine("{0}, SomeFunc: {1}", 
				name, FooAttribute.Count);
		}
	}

	class Test1
	{
		[STAThread]
		static void Main(string[] args)
		{
			SomeClass sc = new SomeClass("Bill");
			sc.SomeFunc();

			SomeClass sc2 = new SomeClass("Mary");
			sc2.SomeFunc();

			sc.SomeFunc();
		}
	}
}