'@' before "..." in string

From http://msdn.microsoft.com/en-us/library/aa691090(VS.71).aspx

 

using System;
class A
{
        public static void Main()
        {

            string a = "hello, world";                  // hello, world
            string b = @"hello, world";               // hello, world
            string c = "hello \t world";               // hello     world
            string d = @"hello \t world";               // hello \t world
            string e = "Joe said \"Hello\" to me";      // Joe said "Hello" to me
            string f = @"Joe said ""Hello"" to me";   // Joe said "Hello" to me
            string g = "\\\\server\\share\\file.txt";   // \\server\share\file.txt
            string h = @"\\server\share\file.txt";      // \\server\share\file.txt

            Console.WriteLine(a);
            Console.WriteLine(b);
            Console.WriteLine(c);
            Console.WriteLine(d);
            Console.WriteLine(e);
            Console.WriteLine(f);
            Console.WriteLine(g);
            Console.WriteLine(h);
        }
}

輸出結果：

hello, world
hello, world
hello    world
hello "t world
Joe said "Hello" to me
Joe said "Hello" to me
""server"share"file.txt
""server"share"file.txt