This is solution for automatic binding action parameters of custom types (including files) encoded as multipart/form-data. It works similar to ASP.NET MVC binding. This media type formatter can be used also for sending objects (using HttpClient) with automatic serialization to multipart/form-data.
This formatter can process:
- custom non enumarable classes (deep nested classes supported)
- all simple types that can be converted from/to string (using TypeConverter)
- files (MultipartDataMediaFormatter.Infrastructure.HttpFile class)
- generic arrays
- generic lists
- generic dictionaries
For using this formatter all you need is to simply add current formatter to WebApi formatters collection:
if WebApi hosted on IIS (on Application Start):
GlobalConfiguration.Configuration.Formatters.Add(new FormMultipartEncodedMediaTypeFormatter()); if WebApi is self-hosted:
new HttpSelfHostConfiguration(<url>).Formatters.Add(new FormMultipartEncodedMediaTypeFormatter()); Using formatter for sending objects (example from test project):
private ApiResult<T> PostModel<T>(T model, string url)
{
var mediaTypeFormatter = new FormMultipartEncodedMediaTypeFormatter();
using (new WebApiHttpServer(BaseApiAddress, mediaTypeFormatter))
using (var client = CreateHttpClient(BaseApiAddress))
using (HttpResponseMessage response = client.PostAsync(url, model, mediaTypeFormatter).Result)
{
if (response.StatusCode != HttpStatusCode.OK)
{
var err = response.Content.ReadAsStringAsync().Result;
Assert.Fail(err);
}
var resultModel = response.Content.ReadAsAsync<ApiResult<T>>(new[] { mediaTypeFormatter }).Result;
return resultModel;
}
}You can use MultipartDataMediaFormatter.Infrastructure.FormData class to access raw http data:
[HttpPost]
public void PostFileBindRawFormData(MultipartDataMediaFormatter.Infrastructure.FormData formData)
{
HttpFile file;
formData.TryGetValue(<key>, out file);
}Bind custom model example:
//model example
public class PersonModel
{
public string FirstName {get; set;}
public string LastName {get; set;}
public DateTime? BirthDate {get; set;}
public HttpFile AvatarImage {get; set;}
public List<HttpFile> Attachments {get; set;}
public List<PersonModel> ConnectedPersons {get; set;}
}
//api controller example
[HttpPost]
public void PostPerson(PersonModel model)
{
//do something with the model
}Licensed under the MIT License.