路径长度超过260个字符时发生System.IO.DirectoryNotFoundException [英] System.IO.DirectoryNotFoundException when path is longer than 260 characters

问题描述

我有ASP.NET Core MVC项目(目标是.NET 4.62)，我正在尝试保存文件.当路径的长度小于260(或者我不确定248)时，一切正常，但是当路径的长度更长时，我得到一个 System.IO.DirectoryNotFoundException .以前，当我定位.NET 4.61时，我遇到了Path太长异常的情况，我已经读到该问题在.NET 4.62中已解决，但不适用于我.

I have ASP.NET Core MVC project (targeting .NET 4.62) and I'm trying to save files. Everything works while the length of the path is under 260 (or 248 I'm not sure), but when it's longer I get a System.IO.DirectoryNotFoundException. Previously when I was targeting .NET 4.61 I was getting Path too long exception, I've read that the problem is fixed in .NET 4.62 but not for me.

这里是我在路径太长时得到的一个例外

Here's exception that I'm getting while path is too long

File.Copy(file, Path.Combine(path, dbFile.Id.ToString()));

我很确定该目录存在.

推荐答案

我为您介绍了

I refer you to this answer on why the ~255 limit filename|folder. Probabaly a probleme because you are on Windows on NTFS. Nothing to do with .NET framework

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