ByteArray to IFormFile

Question

I am developing some REST API with C# and Net Core
I have a function in my repository which accepts a parameter of type IFormFile.

public async Task<bool> UploadFile(IFormFile file)
{
    // do some stuff and save the file to azure storage
}

This function is called by a controller method which pass it the uploaded file

public class FileController : Controller
{
    public async Task<IActionResult> UploadDoc(IFormFile file
    {
        // Call the repository function to save the file on azure
        var res = await documentRepository.UploadFile(file);
    }
}

Now I have another function that calls an external API which returns a file as a byte array. I'd like to save this byte array using the repository.UploadFile method but I can't cast the byte array object to IFormFile.
Is it possible?

Answer 1

You can convert the byte array to a MemoryStream:

var stream = new MemoryStream(byteArray);

..and then pass that to the constructor of the FromFile class:

IFormFile file = new FormFile(stream, 0, byteArray.Length, "name", "fileName");