public class Contact
    {
        [BsonId]
        public string Id { get; set; }
        public string Name { get; set; }
        public string Phone { get; set; }
        public string Email { get; set; }
        public DateTime LastModified { get; set; }
    }

public interface IContactRepository { 
        IEnumerable GetAllContacts(); 
        Contact GetContact(string id); 
        Contact AddContact(Contact item); 
        bool RemoveContact(string id); 
        bool UpdateContact(string id, Contact item);   
    }

public class ContactRepository : IContactRepository
    {
        MongoServer _server = null;
        MongoDatabase _database = null;
        MongoCollection _contacts = null;
 
        public ContactRepository(string connection)
        {
            if (string.IsNullOrWhiteSpace(connection))
            {
                connection = "mongodb://localhost:27017";
            }
 
            _server = new MongoClient(connection).GetServer();
            _database = _server.GetDatabase("Contacts");
            _contacts = _database.GetCollection("contacts");
 
            // Reset database and add some default entries
            _contacts.RemoveAll();
            for (int index = 1; index < 5; index++)
            {
                Contact contact1 = new Contact
                {
                    Email = string.Format("test{0}@example.com", index),
                    Name = string.Format("test{0}", index),
                    Phone = string.Format("{0}{0}{0} {0}{0}{0} {0}{0}{0}{0}", index)
                };
                AddContact(contact1);
            }
        }
 
        public IEnumerable GetAllContacts()
        {
            return _contacts.FindAll();
        }
 
        public Contact GetContact(string id)
        {
            IMongoQuery query = Query.EQ("_id", id);
            return _contacts.Find(query).FirstOrDefault();
        }
 
        public Contact AddContact(Contact item)
        {
            item.Id = ObjectId.GenerateNewId().ToString();
            item.LastModified = DateTime.UtcNow;
            _contacts.Insert(item);
            return item;
        }
 
        public bool RemoveContact(string id)
        {
            IMongoQuery query = Query.EQ("_id", id);
            WriteConcernResult result = _contacts.Remove(query);
            return result.DocumentsAffected == 1;
        }
 
        public bool UpdateContact(string id, Contact item)
        {
            IMongoQuery query = Query.EQ("_id", id);
            item.LastModified = DateTime.UtcNow;
            IMongoUpdate update = Update
                .Set("Email", item.Email)
                .Set("LastModified", DateTime.UtcNow)
                .Set("Name", item.Name)
                .Set("Phone", item.Phone);
            WriteConcernResult result = _contacts.Update(query, update);
            return result.UpdatedExisting;
        }
    }

public class ContactsController : ApiController
    {
        private static readonly IContactRepository _contacts = new ContactRepository(string.Empty);
 
        public IQueryable Get()
        {
            return _contacts.GetAllContacts().AsQueryable();
        }
 
        public Contact Get(string id)
        {
            Contact contact = _contacts.GetContact(id);
            if (contact == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
 
            return contact;
        }
 
        public Contact Post(Contact value)
        {
            Contact contact = _contacts.AddContact(value);
            return contact;
        }
 
        public void Put(string id, Contact value)
        {
            if (!_contacts.UpdateContact(id, value))
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
        }
 
        public void Delete(string id)
        {
            if (!_contacts.RemoveContact(id))
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
        }
    }

public ActionResult Admin()
        {
            string apiUri = Url.HttpRouteUrl("DefaultApi", new { controller = "contacts", });
            ViewBag.ApiUrl = new Uri(Request.Url, apiUri).AbsoluteUri.ToString();
 
            return View();
        }

@model WebAPIDemo.Models.Contact

@{
ViewBag.Title = "Admin";
}

@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
<script type="text/javascript" src="@Url.Content("~/Scripts/knockout-2.3.0.js")"></script>
<script type="text/javascript">
function ProductsViewModel() {
var self = this;
self.products = ko.observableArray();

var baseUri = '@ViewBag.ApiUrl';

self.create = function (formElement) {
// If valid, post the serialized form data to the web api
$(formElement).validate();
if ($(formElement).valid()) {
$.post(baseUri, $(formElement).serialize(), null, "json")
.done(function (o) { self.products.push(o); });
}
}

self.update = function (product) {
$.ajax({ type: "PUT", url: baseUri + '/' + product.Id, data: product });
}

self.remove = function (product) {
// First remove from the server, then from the UI
$.ajax({ type: "DELETE", url: baseUri + '/' + product.Id })
.done(function () { self.products.remove(product); });
}

$.getJSON(baseUri, self.products);
}

$(document).ready(function () {
ko.applyBindings(new ProductsViewModel());
})
</script>
}

<h2>Admin</h2>
<div class="content">
<div class="float-left">
<ul id="update-products" data-bind="foreach: products">

<li>
<div>
<div class="item">ID</div> <span data-bind="text: $data.Id"></span>
</div>
<div>
<div class="item">Name</div>
<input type="text" data-bind="value: $data.Name"/>
</div>
<div>
<div class="item">Phone</div>
<input type="text" data-bind="value: $data.Phone"/>
</div>
<div>
<div class="item">Email</div>
<input type="text" data-bind="value: $data.Email"/>
</div>
<div>
<div class="item">Last Modified</div> <span data-bind="text: $data.LastModified"></span>
</div>
<div>
<input type="button" value="Update" data-bind="click: $root.update"/>
<input type="button" value="Delete Item" data-bind="click: $root.remove"/>
</div>
</li>
</ul>
</div>

<div class="float-right">
<h2>Add New Product</h2>
<form id="addProduct" data-bind="submit: create">
@Html.ValidationSummary(true)
<fieldset>
<legend>Contact</legend>
@Html.EditorForModel()
<p>
<input type="submit" value="Save" />
</p>
</fieldset>
</form>
</div>
</div>

<ul id="menu">
    <li>@Html.ActionLink("Home", "Index", "Home", new { area = "" }, null)</li>
    <li>@Html.ActionLink("API", "Index", "Help", new { area = "" }, null)</li>
    <li>@Html.ActionLink("Admin", "Admin", "Home")</li> 
 
</ul>