Saving image into local folder and make reference of image into a separate db using asp.net ef

Question

I have a image upload module.And its working and saving image into local folder in the project called Image. Now I want to save the file name and path to a separate table(db.Images) in the db which has three columns id, name, path.

[Route("api/Customers/PostUserImage")]
[AllowAnonymous]
public async Task<HttpResponseMessage> PostUserImage()
{
        Dictionary<string, object> dict = new Dictionary<string, object>();
        try
        {

            var httpRequest = HttpContext.Current.Request;

            foreach (string file in httpRequest.Files)
            {
                HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created);

                var postedFile = httpRequest.Files[file];
                if (postedFile != null && postedFile.ContentLength > 0)
                {

                    int MaxContentLength = 1024 * 1024 * 1; //Size = 1 MB  

                    IList<string> AllowedFileExtensions = new List<string> { ".jpg", ".gif", ".png" };
                    var ext = postedFile.FileName.Substring(postedFile.FileName.LastIndexOf('.'));
                    var extension = ext.ToLower();
                    if (!AllowedFileExtensions.Contains(extension))
                    {

                        var message = string.Format("Please Upload image of type .jpg,.gif,.png.");

                        dict.Add("error", message);
                        return Request.CreateResponse(HttpStatusCode.BadRequest, dict);
                    }
                    else if (postedFile.ContentLength > MaxContentLength)
                    {

                        var message = string.Format("Please Upload a file upto 1 mb.");

                        dict.Add("error", message);
                        return Request.CreateResponse(HttpStatusCode.BadRequest, dict);
                    }
                    else
                    {
                        var filePath = HttpContext.Current.Server.MapPath("~/Image/" + postedFile.FileName + extension);

                        postedFile.SaveAs(filePath);
                    }
                }

                var message1 = string.Format("Image Updated Successfully.");
                return Request.CreateErrorResponse(HttpStatusCode.Created, message1); ;
            }

            var res = string.Format("Please Upload a image.");
            dict.Add("error", res);
            return Request.CreateResponse(HttpStatusCode.NotFound, dict);
        }
        catch (Exception ex)
        {
            var res = string.Format("some Message");
            dict.Add("error", res);
            return Request.CreateResponse(HttpStatusCode.NotFound, dict);
        }
}

Can anyone help me? I am new to backend coding.

thanks ebk