How to send image file along with other parameter in asp.net? - asp.net

Question

I want to send image files to SQL Server using C#.
The below code is working and saving files and their paths into the database. I need the same data in my API endpoint's response. I've created a custom response class, called RegistrationResponse.
I'm beginner in this so I'm looking for help.
public async Task<RegistrationResponse> PostFormData(HttpRequestMessage request)
{
object data = "";
NameValueCollection col = HttpContext.Current.Request.Form;
// Check if the request contains multipart/form-data.
if (!Request.Content.IsMimeMultipartContent())
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
string root = HttpContext.Current.Server.MapPath("~/images");
var provider = new MultipartFormDataStreamProvider(root);
// Read the form data and return an async task.
var task = Request.Content.ReadAsMultipartAsync(provider).
ContinueWith<HttpResponseMessage>(t =>
{
if (t.IsFaulted || t.IsCanceled)
{
Request.CreateErrorResponse(HttpStatusCode.InternalServerError, t.Exception);
}
//read file data
foreach (MultipartFileData dataItem in provider.FileData)
{
try
{
string description = string.Empty;
string userId = string.Empty;
String fileName = string.Empty;
// Show all the key-value pairs.
foreach (var key in provider.FormData.AllKeys)
{
foreach (var val in provider.FormData.GetValues(key))
{
if (key.ToString().ToLower() == "userid")
{
userId = val;
}
else if (key.ToString().ToLower() == "description")
{
description = val;
}
}
}
String name = dataItem.Headers.ContentDisposition.FileName.Replace("\"", "");
fileName = userId + Path.GetExtension(name);
File.Move(dataItem.LocalFileName, Path.Combine(root, fileName));
using (var db = new AlumniDBEntities())
{
//saving path and data in database table
Post userPost = new Post();
userPost.Files = fileName;
userPost.Description = description;
userPost.UserID = Convert.ToInt32(userId);
userPost.CreatedDate = DateTime.Now;
db.Posts.Add(userPost);
db.SaveChanges();
data = db.Posts.Where(x => x.PostID ==
userPost.PostID).FirstOrDefault();
string output = JsonConvert.SerializeObject(data);
}
}
catch (Exception ex)
{
return Request.CreateResponse(ex);
}
}
return Request.CreateResponse(HttpStatusCode.Created);
});
var response = new RegistrationResponse
{
success = true,
status = HttpStatusCode.OK,
message = "Success",
data = data
};
return response;
}