How to get local file system path in azure websites

Question

I have a file hosted on the disk along with my website that I want to read .Not sure how do I access the file when I use System.Environment.CurrentDirectory it point to a D

Answer 1

I'm currently using AppDomain.CurrentDomain.BaseDirectory (.NET Core project). It returns "D:\home\site\wwwroot\" in Azure and the application root in local so the only difference is adding "bin\\" when it is Azure. I am searching the entire directory tree, just in case, but it can be trimmed.

It's something like:

private static string GetDriverPath(ILogger logger, string fileName)
{
    var path = AppDomain.CurrentDomain.BaseDirectory;

    if (File.Exists(Path.Combine(path, fileName)))
    {
        return path;
    }

    string[] paths= Directory.GetFiles(path, fileName, SearchOption.AllDirectories);

    if (paths.Any())
    {
        return Path.GetDirectoryName(paths.First());
    }

    throw new FileNotFoundException($"{fileName} was not found in {path}.", fileName);
}

I'm new answering questions and this is an old one but I hope it helps someone.

Answer 2

For testability, I use below code.

string path = "";
if (!string.IsNullOrEmpty(Environment.GetEnvironmentVariable("HOME")))
    path = Environment.GetEnvironmentVariable("HOME") + "\\site\\wwwroot\\bin";
else
    path = ".";
path += "\\Resources\\myfile.json";

In above example, I added myfile.json file to Resources folder in a project with Content and Copy if newer property setting.

Answer 3

This works for me in both localhost and azure:

Path.Combine(System.Web.Hosting.HostingEnvironment.ApplicationPhysicalPath, "file_at_root.txt");

System.Web.Hosting.HostingEnvironment.ApplicationPhysicalPath is the full local path to your site's root.

Answer 4

You can do it using the below code.

string fullFilePath = Environment.GetEnvironmentVariable("HOME") != null
    ? Environment.GetEnvironmentVariable("HOME") + @"\site\wwwroot\test.txt" //It will give the file directory path post azure deployment
    : Path.GetDirectoryName(Path.GetDirectoryName(Directory.GetCurrentDirectory())) + @"\test.txt";//It will give the file directory path in dev environment.

Answer 5

There is an environment variable called HOME in your website's environment that will get you part way there.

You can access it using razor syntax or in code (C#). For example, suppose you have a file called data.txt that is at the root of your site with the default document and the rest of your files. You could get it's full path like this.

@{ var dataFileName = Environment.GetEnvironmentVariable("HOME").ToString() + "\\site\\wwwroot\\data.txt"; }

You can find this out on your own using the Site Control Management/"Kudu". For example, if your website is contoso.azurewebsites.net, then simply navigate to contoso.scm.azurewebsites.net. In here you can learn all about the file system and environment variables available to your website.