@using (Html.BeginForm("Multiple", "Home", FormMethod.Post, new { enctype = "multipart/form-data" })) { 
    <input type="file" name="files" multiple />
    <button class="btn btn-default">Upload</button>   
}

@using (Html.BeginForm("Multiple", "Home", FormMethod.Post, new { enctype = "multipart/form-data" })) {  
    <input type="file" name="files" /><br />
    <input type="file" name="files" /><br />
    <input type="file" name="files" /><br />
    <button class="btn btn-default">Upload</button>   
}

[HttpPost]
public ActionResult Multiple(IEnumerable<HttpPostedFileBase> files)
{
    foreach (var file in files)
    {
        if (file != null && file.ContentLength > 0)
        {
            file.SaveAs(Path.Combine(Server.MapPath("/uploads"), Guid.NewGuid() + Path.GetExtension(file.FileName)));
        }
    }
    return View();
}

{
  "projects": [ "src", "test" ],
  "sdk": {
    "version": "1.0.0-preview2-003131"
  }
}

 @NgModule({
     imports: [
         // module dependencies
         BrowserModule,
         FormsModule,
        ReactiveFormsModule,
         HttpModule,
         routing
     ],