File could not be found using long file Paths

Question

I'm trying to remove the lfs tracking tag from git before I process some files only some of the files when used in our companies jenkins server contain file paths that are 260+ characters. Due to this I am trying to get C# to work with long file paths. I seem to be struggling with the below code I get "Could not find file" however I 100% no the file exists and think i'm doing something incorrect in terms of my use of @"\?\" Any advice would be appreciated.

    static int removeLFSTracking(string path)
    {
        int rC = STATUS_OK;
        string lfsTracked = ".lfs.tracked";

        List<string> files = new List<string>();
        getFiles( path, files );

        foreach(string file in files)
        {
            if(file.Contains(lfsTracked))
            {
                string newFileName = file.Replace(lfsTracked, "");
                try
                {
                    System.IO.File.Move( @"\\?\" + file, @"\\?\" + newFileName );
                }
                catch(SystemException e)
                {
                    Console.WriteLine( "Failed to remove lfs tracked from file " + file );
                    Console.WriteLine( e.ToString( ) );
                }
            }
        }
        return rC;
    }

my XML app.config:

<?xml version="1.0" encoding="utf-8" ?>
<configuration> 
  <configSections>
    <section name="Extensions" type="System.Configuration.AppSettingsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
  </configSections>
  <runtime>
    <AppContextSwitchOverrides value="Switch.System.IO.UseLegacyPathHandling=false;Switch.System.IO.BlockLongPaths=false" />
  </runtime>
   <startup> 
      <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
  </startup>

Answer was: I was using relative paths, this doesn't seem to work with the syntax and when I changed to absolute paths my code worked fine.

What does the path look like? Can you use that path from Windows Explorer? If the path is wrong, the rest of the code doesn't matter — Panagiotis Kanavos, Nov 18 '19 at 08:14
Does this answer your question? [How to deal with files with a name longer than 259 characters?](https://stackoverflow.com/questions/5188527/how-to-deal-with-files-with-a-name-longer-than-259-characters) — Fourat, Nov 18 '19 at 08:15
For example, does `file` contain the path?We can't know from this question — Panagiotis Kanavos, Nov 18 '19 at 08:15
@PanagiotisKanavos Thanks you're pointer about working in windows helped, it turns out it didnt particularly like using relative paths along with that syntax, once I changed to absolute paths it was fine. — Pheanturim, Nov 18 '19 at 08:27

score 0 · Accepted Answer · answered Nov 18 '19 at 08:28

0

I was using relative Paths for file and newFileName, these didn't work in conjunction with the \?\ syntax, once I changed these to absolute it worked fine.

answered Nov 18 '19 at 08:28

Pheanturim

1
4

File could not be found using long file Paths

1 Answers1