C# 获取父目录的父目录
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Get parent directory of parent directory
提问by Elliott
I have a string relating to a location on a network and I need to get the directory that is 2 up from this location.
我有一个与网络上某个位置相关的字符串，我需要从该位置获取 2 上的目录。
The string could be in the format:
该字符串可以采用以下格式：
string networkDir = "\\networkLocation\staff\users\username";
In which case I would need the stafffolder and could use the following logic:
在这种情况下，我将需要该staff文件夹并可以使用以下逻辑：
string parentDir1 = Path.GetDirectoryName(networkDir);
string parentDir2 = Path.GetPathRoot(Path.GetDirectoryName(networkDir));
However, if the string is in the format:
但是，如果字符串采用以下格式：
string networkDir = "\\networkLocation\users\username";
I would just need the networkLocationpart and parentDir2returns null.
我只需要该networkLocation部分并parentDir2返回 null。
How can I do this?
我怎样才能做到这一点？
Just to clarify: In the case that the root happens to be the directory 2 up from the given folder then this is what I need to return
只是为了澄清：如果根恰好是给定文件夹中的目录 2，那么这就是我需要返回的
采纳答案by Elliott
DirectoryInfo d = new DirectoryInfo("\\networkLocation\test\test");
if (d.Parent.Parent != null)
{
string up2 = d.Parent.Parent.ToString();
}
else
{
string up2 = d.Root.ToString().Split(Path.DirectorySeparatorChar)[2];
}
Is what I was looking for. Apologies for any confusion caused!
是我要找的。对造成的任何混乱表示歉意！
回答by Omaha
You can use the System.IO.DirectoryInfo class:
您可以使用 System.IO.DirectoryInfo 类：
DirectoryInfo networkDir=new DirectoryInfo(@"\Path\here\now\username");
DirectoryInfo twoLevelsUp=networkDir.Parent.Parent;
回答by tsells
You could try this (I use it in my command lines / batch files all the time).
你可以试试这个（我一直在命令行/批处理文件中使用它）。
string twolevelsup = Path.Combine("\\networkLocation\staff\users\username", "..\..\");
回答by gameweld
I ran into a similar situation. Looks like you could just call GetDirectoryNametwice!
我遇到了类似的情况。看起来你只能打电话GetDirectoryName两次！
var root = Path.GetDirectoryName( Path.GetDirectoryName( path ) );
Viola!
中提琴！
