C# Path

变量准备

var filePath = @"c:\doc\1.txt";
var dirPath1 = @"c:\music\";
var dirPath2 = @"c:\movie";

路径拼接

Console.WriteLine(Path.Combine(dirPath1, "a.mp3")); //c:\music\a.mp3
Console.WriteLine(Path.Combine(dirPath2, "b.mp4")); //c:\movie\b.mp4

获取文件夹的名字

Console.WriteLine(Path.GetDirectoryName(dirPath1)); //c:\music
Console.WriteLine(Path.GetDirectoryName(dirPath2)); //c:Console.WriteLine(Path.GetDirectoryName(filePath)); //c:\doc

Console.WriteLine(new DirectoryInfo(dirPath1).Name); //music
Console.WriteLine(new DirectoryInfo(dirPath2).Name); //movie
Console.WriteLine(new DirectoryInfo(@"d:\a\b\c\d").Parent.Name); //c

获取文件名或后缀

Console.WriteLine(Path.GetFileName(filePath));  //1.txt
Console.WriteLine(Path.GetFileNameWithoutExtension(filePath));  //1
Console.WriteLine(Path.GetExtension(filePath)); //.txt