How do you take an image (passed in as a Base64 encoded string) and save it to the server in Asp.Net C#?

Question

I want to create a function like this...

    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult SaveImage(string file, string fileName)
    {

    }

Where the file is the Base64 encoded string created from the image, and the fileName is the name I want to save it as. How can I use this encoded string to write the image to the server?

Do I need to use BinaryWriter or TextWriter or some other one? And how do you decode the data to allow it to write to the server properly?

Answer 1

byte[] contents = Convert.FromBase64String(file);
System.IO.File.WriteAllBytes(Server.MapPath(fileName), contents);