C# 获取路径中文件名、目录、扩展名等

string path = "C:\\dir1\\dir2\\foo.txt"; 
string str = "GetFullPath：" + Path.GetFullPath(path) + "\r\n"; 
str += "GetDirectoryName：" + Path.GetDirectoryName(path) + "\r\n"; str += "GetFileName：" + Path.GetFileName(path) + "\r\n"; 
str += "GetFileNameWithoutExtension：" + Path.GetFileNameWithoutExtension(path) + "\r\n"; 
str += "GetExtension：" + Path.GetExtension(path) + "\r\n"; str += "GetPathRoot：" + Path.GetPathRoot(path) + "\r\n"; MessageBox.Show(str);
 结果： 
GetFullPath：C:\dir1\dir2\foo.txt
 GetDirectoryName：C:\dir1\dir2 
GetFileName：foo.txt 
GetFileNameWithoutExtension：foo 
GetExtension：.txt 
GetPathRoot：C:\