Uploading images using WebApi and JSON

Hi All,

I recently had a requirement to create a Web API to work with a mobile phone. I was required to create a method to upload images. So I did it the following way hope you like it.

1) Class Definitions
 public class AuthData
    {
        public string auth_token { get; set; }

    }
  
    public class ImageSetData : AuthData
    {
        public string Name { get; set; }
        public List<Image> Images { get; set; }
    }

    public class Image
    {
        public string FileName { get; set; }
        public string Extension { get; set; }
        public byte[] ImageData { get; set; }
    }

2) WebApi Method

public ReturnMsg SaveFile([FromBody] ImageSetData imageData)
        {
            ReturnMsg objReturnMsg = new ReturnMsg();

            try
            {
                if (APIHelper.AuthenticateToken(imageData.auth_token))
                {

                    foreach (var image in imageData.Images)
                    {
                        File.WriteAllBytes(string.Format("{0}\\{1}.{2}", HttpContext.Current.Server.MapPath("~/App_Data") , image.FileName, image.Extension), image.ImageData);
                    }  
                  




                }
                else
                {
                    objReturnMsg.success = false;
                    objReturnMsg.msg = "Invalid Token. Please Login to continue";
                }
            }
            catch (Exception ex)
            {

                objReturnMsg.success = false;
                objReturnMsg.msg = "Internal Server Error. Contact Admin.";
                APIHelper.Log(ex.Message, ex.StackTrace);
            }


            return objReturnMsg;
        }

3) Post Man Screen shot and Image