ASP.NET Core Image Upload and Resize

How do you get the file stream of an uploaded image (IFormFile) and resize it?

public ActionResult Upload(IFormFile file)
{
    using (var reader = new StreamReader(file.OpenReadStream()))
    {
        var fileContent = reader.ReadToEnd();
        var parsedContentDisposition = ContentDispositionHeaderValue.Parse(file.ContentDisposition);

        //scale image here?
    }
}

You can use IFormFile.OpenReadStream() to get the stream, and then just insert the stream into an Image. For this instance I scaled it to 1024x768.

Image image = Image.FromStream(file.OpenReadStream(), true, true);
var newImage = new Bitmap(1024, 768);
using (var g = Graphics.FromImage(newImage))
{
    g.DrawImage(image , 0, 0, 1024, 768); 
}

You can then use newImage to save or do whatever you want with.