        var filePath = @"c:doc1.txt";
var dirPath1 = @"c:music";
var dirPath2 = @"c:movie";

路径拼接

        Console.WriteLine(Path.Combine(dirPath1, "a.mp3")); //c:musica.mp3
Console.WriteLine(Path.Combine(dirPath2, "b.mp4")); //c:movieb.mp4

原文：https://www.cnblogs.com/trykle/p/14505546.html

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