Is it possible to read File from same folder where Azure function exists

Question

In my Azure C# function I need to read a .txt file. I make the .txt file in Visual studio and set it to "copy Always".

Now I am using this code to read the file

var dir = System.IO.Path.GetDirectoryName(     System.Reflection.Assembly.GetEntryAssembly().Location);  var path = System.IO.Path.Combine(dir, "twinkle.txt"); 

this code doesn't work. When I open the folder which is the value of dir. It lead me to this directory ""C:\Users{username}\AppData\Local\Azure.Functions.Cli\1.0.9""

How I can store a simple txt file in Azure function. Or I need Azure Storage for this.

Anything else I can do to get this done.

Update for showing file copied

Answer 1

Here is how to get to the correct folder:

public static HttpResponseMessage Run(HttpRequestMessage req, ExecutionContext context) {     var path = System.IO.Path.Combine(context.FunctionDirectory, "twinkle.txt");     // ... } 

This gets you to the folder with function.json file. If you need to get to bin folder, you probably need to go 1 level up, and then append bin:

// One level up Path.GetFullPath(Path.Combine(context.FunctionDirectory, "..\\twinkle.txt"))  // Bin folder Path.GetFullPath(Path.Combine(context.FunctionDirectory, "..\\bin\\twinkle.txt")) 

Answer 2

For those like me who doesn't have access to ExecutionContext since we have to read a file in Startup.

var binDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); var rootDirectory = Path.GetFullPath(Path.Combine(binDirectory, ".."));  ///then you can read the file as you would expect yew! File.ReadAllText(rootDirectory + "/path/to/file.ext"); 

Also worth noting that Environment.CurrentDirectory might work on a local environment, but will not work when deployed to Azure.

Works inside functions too.

Reference