Windows 7路径太长，无法使用.Net Framework 4.6.2创建260个字符以上的文件

Question

I trying to create file with more than 260 characters of file path with .Net Framework 4.6.2

This is working fine in Windows 10, but not able to create in Windows 7 environment.

I am trying to create file pragmatically using C#.

Can you please help me to find solution that will work for any Windows environment.

Answer 1

Windows 7 does not support paths longer than 260 characters. Stick to this limit if you can. Unsupported functionality might break in a Windows update.

You can read more about this here: https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx#maxpath This link also explains the '\\\\?\\' prefix which allows paths up to approximately 32'767 characters (Example: "\\\\?\\D:\\very long path"). But I haven't tested '\\\\?\\' with the C# API.

The following links might also be interesting

• Why does the 260 character path length limit exist in Windows?
• https://blogs.msdn.microsoft.com/bclteam/2007/02/13/long-paths-in-net-part-1-of-3-kim-hamilton/

Answer 2

You can use ZetaLongPaths library for older systems and/or frameworks. There are several similar libraries exists, but this one is probably the best.