File upload to create directory ASP.Net core mac os doesn't create sub folder

Question

I'm using asp.net core to create a project to upload the file in specific location in the server.

Here is the code:

TempFileName = Regex.Replace(vehicle.FileUpload.FileName, "[^a-zA-Z0-9_]+", "_", RegexOptions.Compiled);
var directiveToUpload = Path.Combine(_hostingEnvironment.WebRootPath, "images\\UploadFile");

if (!System.IO.Directory.Exists(directiveToUpload))
{
    System.IO.Directory.CreateDirectory(directiveToUpload);
}

await SaveFileToServer(TempFileName);

Save the file:

async Task SaveFileToServer(string FileName)
{

    if (vehicle.FileUpload.Length > 0)
    {
        using (var stream = new FileStream(Path.Combine(directiveToUpload, FileName), FileMode.Create))
        {
            await vehicle.FileUpload.CopyToAsync(stream);
        }
    }
}

Since the file Get uploaded But it doesn't create sub folder on mac. images\\UploadFile this is not working.

Answer 1

Can't reproduce this issue, but since directory separator is not \\ on Mac, I guess it does not interpret it correctly. You could replace your code with the usage of Path.DirectorySeparatorChar constant to avoid this.

var directiveToUpload = Path.Combine(_hostingEnvironment.WebRootPath, "images\\UploadFile");

Would become

var directiveToUpload = Path.Combine(_hostingEnvironment.WebRootPath, $"images{Path.DirectorySeparatorChar}UploadFile");