Window文件路径

\Program Files\Custom Utilities\StringFinder.exe   当前驱动器根路径上的绝对路径。

Directory.SetCurrentDirectory(@"E:\");

string path = Path.GetFullPath(@"E:\youdao");
Console.WriteLine($@"‘E:\youdao‘ resolves to {path}");

path = Path.GetFullPath(@"E:youdao");
Console.WriteLine($"‘E:youdao‘ resolves to {path}");

Console.WriteLine(@"Setting current directory to ‘E:\youdao\Dict‘");
Directory.SetCurrentDirectory(@"E:\youdao\Dict"); 
// E:盘当前目录上的相对路径,卷号后面没有跟目录分隔符。
path = Path.GetFullPath(@"E:7z8.5.1.0"); 
Console.WriteLine($"‘E:7z8.5.1.0‘ resolves to {path}");

result:
‘E:\youdao‘ resolves to E:\youdao
‘E:youdao‘ resolves to E:\youdao
Setting current directory to ‘E:\youdao\Dict‘
‘E:7z8.5.1.0‘ resolves to E:\youdao\Dict\7z8.5.1.0