Error: Trying to create a parent directory, which exists but the current user has no permissions.

[panos-konstantellos]

Given the already existing path D:/git/projects/repo_name/source/project_name/uploads/ with the following permissions:

• D: ~> Full control to windows_user & administrator_group
• git ~> Full control to windows_user & administrator_group
• projects ~> Full control to windows_user & administrator_group
• repo_name ~> Full control to windows_user & administrator_group
• source ~> Full control to windows_user & administrator_group
• project_name ~> Full control to IIS_POOL_USER, windows_user & administrator_group
• uploads ~> Full control to IIS_POOL_USER, windows_user & administrator_group

and executing the Pri.LongPath.Directory.CreateDirectory("D:\git\projects\repo_name\Source\project_name\Uploads\folder_to_create\"); in an app hosted in IIS, running as the IIS_POOL_USER the pathComponents list contains folders that do exist but the IIS_POOL_USER has no permissions.

In the following code: https://github.com/peteraritchie/LongPath/blob/6133dc9ca935127e1663fef27a52717e4174db3d/Pri.LongPath/Directory.cs#L840-L867

I propose that lines 847 & 848 should be altered like this:

                    if (Exists(subPath))
                    {
                        break; // If a subfolder exists then there's no need to check for parent folders
                    }
                    else
                    {
                        pathComponents.Add(Path.NormalizeLongPath(subPath));
                    }

[peteraritchie]

Good find, and thanks for the included PR!