C#比较字符串

using System;

namespace StringApplication {

   class StringProg {

      static void Main(string[] args) {
         string str1 = This is test;
         string str2 = This is text;

         if (String.Compare(str1, str2) == 0) {
            Console.WriteLine(str1 +  and  + str2 +   are equal.);
         } else {
            Console.WriteLine(str1 +  and  + str2 +  are not equal.);
         }
         Console.ReadKey() ;
      }
   }
}