How can we upload a file to a server? - asp.net-web-api

Question

This is my api
[HttpPost]
[Route("uploadfile")]
public HttpResponseMessage PostFile(HttpRequest request)
{
HttpResponseMessage result = null;
var httpRequest = request;//HttpContext.Current.Request;
if (httpRequest.Files.Count > 0)
{
var docfiles = new List<string>();
foreach (string file in httpRequest.Files)
{
var postedFile = httpRequest.Files[file];
var filePath = HttpContext.Current.Server.MapPath("Uploads/" + postedFile.FileName);
postedFile.SaveAs(filePath);
docfiles.Add(filePath);
}
result = Request.CreateResponse(HttpStatusCode.Created, docfiles);
}
else
{
result = Request.CreateResponse(HttpStatusCode.BadRequest);
}
return result;
}
This is my client code
private async void button_Click(object sender, RoutedEventArgs e)
{
byte[] a = File.ReadAllBytes(#"C:\My folder\MyFile.txt");
FileStream stream = File.Open(#"C:\My folder\MyFile.txt", FileMode.Open);
Upload(#"http://localhost:56885/uploadfile", "MyFile", stream, a);
MessageBox.Show("File uploaded Successfully");
}
private Stream Upload(string url, string param1,
Stream fileStream, byte[] fileBytes)
{
HttpContent stringContent = new StringContent(param1);
HttpContent fileStreamContent = new StreamContent(fileStream);
HttpContent bytesContent = new ByteArrayContent(fileBytes);
using (var client = new HttpClient())
using (var formData = new MultipartFormDataContent())
{
formData.Add(stringContent, "param1", "param1");
formData.Add(fileStreamContent, "file1", "file1");
formData.Add(bytesContent, "file2", "file2");
var response = client.PostAsync(url, formData).Result;
if (!response.IsSuccessStatusCode)
{
return null;
}
MessageBox.Show("File uploaded Successfully");
return response.Content.ReadAsStreamAsync().Result;
}
}
I was getting an error {
"message": "The request entity's media type 'multipart/form-data' is not supported for this resource.",
"exceptionMessage": "No MediaTypeFormatter is available to read an object of type 'HttpRequest' from content with media type 'multipart/form-data'.",
"exceptionType": "System.Net.Http.UnsupportedMediaTypeException",
"stackTrace": " at System.Net.Http.HttpContentExtensions.ReadAsAsync[T](HttpContent content, Type type, IEnumerable1 formatters, IFormatterLogger formatterLogger, CancellationToken cancellationToken) at System.Net.Http.HttpContentExtensions.ReadAsAsync(HttpContent content, Type type, IEnumerable1 formatters, IFormatterLogger formatterLogger, CancellationToken cancellationToken) at System.Web.Http.ModelBinding.FormatterParameterBinding.ReadContentAsync(HttpRequestMessage request, Type type, IEnumerable`1 formatters, IFormatterLogger formatterLogger, CancellationToken cancellationToken)"
}