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1.预处理指令是让编译器预先处理一些指令,C#的编译器没有专门的预处理指令器,是由编译器执行的
#if (DEBUG)
Console.WriteLine("this is a test");
#elif
Console.WriteLine("you can see the elif ");
#else
Console.WriteLine("you can see the else");
#endif
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原文地址:http://www.cnblogs.com/weloveshare/p/5325713.html