C#中DateTime.Compare()比较时间大小

public static int Compare (
    DateTime t1,
    DateTime t2
)

using System;  
using System.Collections.Generic;  
using System.Linq;  
using System.Text;  
  
namespace ConsoleApplication1  
{  
    class Program  
    {  
        static void Main(string[] args)  
        {  
            DateTime t1 = DateTime.Parse("2011-2-2");  
            DateTime t2 = DateTime.Parse("2011-3-1");  
  
            if (DateTime.Compare(t1, t2) > 0)   
                Console.WriteLine("t1 > t2");  
            if (DateTime.Compare(t1, t2) == 0)   
                Console.WriteLine("t1 == t2");  
            if (DateTime.Compare(t1, t2) < 0)   
                Console.WriteLine("t1 < t2");  
        }  
    }  
}