TreeMap For AngularJS Using ASP.NET MVC 5

Introduction

In this post, I will show you how to create TreeMap, using Web API2, AngularJS, and Entity Framework.

Prerequisites

As I said earlier, we are going to use the TreeMap plugin in our MVC application with AngularJS. For this, you must have Visual Studio 2015 (.NET Framework 4.5.2) and SQL Server.

SQL Database part

Here, you can find the scripts to create the database and table.

Create Database

USE [master]
GO

/****** Object: Database [PopulationDB] Script Date: 9/12/2016 8:54:39 AM ******/
CREATE DATABASE [PopulationDB]
CONTAINMENT = NONE
ON PRIMARY
( NAME = N'PopulationDB', FILENAME = N'c:\Program Files (x86)\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\DATA\PopulationDB.mdf' , SIZE = 3072KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB )
LOG ON
( NAME = N'PopulationDB_log', FILENAME = N'c:\Program Files (x86)\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\DATA\PopulationDB_log.ldf' , SIZE = 1024KB , MAXSIZE = 2048GB , FILEGROWTH = 10%)
GO

ALTER DATABASE [PopulationDB] SET COMPATIBILITY_LEVEL = 110
GO

IF (1 = FULLTEXTSERVICEPROPERTY('IsFullTextInstalled'))
begin
EXEC [PopulationDB].[dbo].[sp_fulltext_database] @action = 'enable'
end
GO

ALTER DATABASE [PopulationDB] SET ANSI_NULL_DEFAULT OFF
GO

ALTER DATABASE [PopulationDB] SET ANSI_NULLS OFF
GO

ALTER DATABASE [PopulationDB] SET ANSI_PADDING OFF
GO

ALTER DATABASE [PopulationDB] SET ANSI_WARNINGS OFF
GO

ALTER DATABASE [PopulationDB] SET ARITHABORT OFF
GO

ALTER DATABASE [PopulationDB] SET AUTO_CLOSE OFF
GO

ALTER DATABASE [PopulationDB] SET AUTO_CREATE_STATISTICS ON
GO

ALTER DATABASE [PopulationDB] SET AUTO_SHRINK OFF
GO

ALTER DATABASE [PopulationDB] SET AUTO_UPDATE_STATISTICS ON
GO

ALTER DATABASE [PopulationDB] SET CURSOR_CLOSE_ON_COMMIT OFF
GO

ALTER DATABASE [PopulationDB] SET CURSOR_DEFAULT GLOBAL
GO

ALTER DATABASE [PopulationDB] SET CONCAT_NULL_YIELDS_NULL OFF
GO

ALTER DATABASE [PopulationDB] SET NUMERIC_ROUNDABORT OFF
GO

ALTER DATABASE [PopulationDB] SET QUOTED_IDENTIFIER OFF
GO

ALTER DATABASE [PopulationDB] SET RECURSIVE_TRIGGERS OFF
GO

ALTER DATABASE [PopulationDB] SET DISABLE_BROKER
GO

ALTER DATABASE [PopulationDB] SET AUTO_UPDATE_STATISTICS_ASYNC OFF
GO

ALTER DATABASE [PopulationDB] SET DATE_CORRELATION_OPTIMIZATION OFF
GO

ALTER DATABASE [PopulationDB] SET TRUSTWORTHY OFF
GO

ALTER DATABASE [PopulationDB] SET ALLOW_SNAPSHOT_ISOLATION OFF
GO

ALTER DATABASE [PopulationDB] SET PARAMETERIZATION SIMPLE
GO

ALTER DATABASE [PopulationDB] SET READ_COMMITTED_SNAPSHOT OFF
GO

ALTER DATABASE [PopulationDB] SET HONOR_BROKER_PRIORITY OFF
GO

ALTER DATABASE [PopulationDB] SET RECOVERY SIMPLE
GO

ALTER DATABASE [PopulationDB] SET MULTI_USER
GO

ALTER DATABASE [PopulationDB] SET PAGE_VERIFY CHECKSUM
GO

ALTER DATABASE [PopulationDB] SET DB_CHAINING OFF
GO

ALTER DATABASE [PopulationDB] SET FILESTREAM( NON_TRANSACTED_ACCESS = OFF )
GO

ALTER DATABASE [PopulationDB] SET TARGET_RECOVERY_TIME = 0 SECONDS
GO

ALTER DATABASE [PopulationDB] SET READ_WRITE
GO

Create Table

USE [PopulationDB]
GO

/****** Object: Table [dbo].[tbt_populations] Script Date: 9/13/2016 8:20:32 AM ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

SET ANSI_PADDING ON
GO

CREATE TABLE [dbo].[tbt_populations](
[ID] [int] NOT NULL,
[COUNTRY] [varchar](50) NULL,
[POPULATION] [bigint] NULL,
CONSTRAINT [PK_tbt_populations] PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

GO

SET ANSI_PADDING OFF
GO

After creating the table, you can add some records, as shown below.



Create your MVC application

Open Visual Studio and select File >> New Project. The "New Project" window will pop up. Select ASP.NET Web Application (.NET Framework), name your project, and click OK.



Now, a new window pops up for selecting the template. Choose Web API and click OK.



Now, we are going to add ADO.NET Entity Data Model.

Adding ADO.NET Entity Data Model

For adding ADO.NET Entity Data Model, right click on the project name and click Add > Add New Item. A new dialog box will pop up. Inside Visual C#, select Data >> ADO.NET Entity Data Model.

 

Now, enter the name for your Dbcontext model as DbContextPopulation and finally, click Add.

At this level, choose "EF Designer from database", as show below.



In the following window, we need to choose the data connection which should be used to connect to the database. If the connection doesn’t exist, click on the "New Connection" button for creating a new one.



After clicking on Next button, the Entity Data Model Wizard will pop up for choosing the object which we want to use. In this example, we are going to choose tbt_populations table and click Finish. Finally, we see that EDMX model generates tbt_Populations class.



Create a Controller

Now, we are going to create a Controller. Right click on the "Controllers" folder > Add > Controller> selecting Web API 2 Controller – Empty > click Add.



Enter Controller name (‘PopulationController’).



PopulationController.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using TreeMap_For_AngularJS.Models;

namespace TreeMap_For_AngularJS.Controllers
{
    public class PopulationController : ApiController
    {

        //DbContext
        private PopulationsDBEntities context = new PopulationsDBEntities();

        [HttpGet]
        public IEnumerable<PopulationModel> GetPopulation()
        {
            var PopulationList = context.tbt_populations.Select(p => new PopulationModel { label = p.COUNTRY, value = p.POPULATION });

            return PopulationList.ToList();

        }


    }
}

Here, I’m creating GetPopulation() action which will select all data from tbt_Poplulations table and return the result as list of PopulationModel.

Here, you find the definition of PopulationModel class.

PopulationModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace TreeMap_For_AngularJS.Models
{
    public class PopulationModel
    {

        public string label { get; set; }
        public long value { get; set; }
    }
}

HomeController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Web;
using System.Web.Mvc;
using TreeMap_For_AngularJS.Models;

namespace TreeMap_For_AngularJS.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        IEnumerable<PopulationModel> PopulationList = Enumerable.Empty<PopulationModel>();

        [HttpGet]
        public JsonResult GetPopulationList()
        {
            HttpClient client = new HttpClient();
            client.BaseAddress = new Uri("http://localhost:56720/");
            client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));

            HttpResponseMessage response = client.GetAsync("api/Population").Result;

            if (response.IsSuccessStatusCode)
            {
                 PopulationList = response.Content.ReadAsAsync<IEnumerable<PopulationModel>>().Result;
            }

            return Json(PopulationList, JsonRequestBehavior.AllowGet);


        }
    }
}

As you can see, I’m creating GetPopulationList() action which calls our API.

For calling our API, you need to,

• Create an object from HttpClient class.
• Specify URI of our API (in this example the URI used is: http://localhost:56720/).
• Select the header of request. I’m choosing application/json, but you can choose another format, like xml, csv …
• Finally, for calling the API, we need to use GetAsyc("api/Population") as mentioned above.

Adding View

In Home Controller, just right click on Index() action and select Add View. A new dialog will pop up. Write a name for your View and finally, click Add.



Note

Don’t forget to download the following libraries from jqxwidgets.

<!-- CSS -->
<link href="~/Content/jqx.base.css" rel="stylesheet" />
<!-- JS -->
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.7/angular.min.js"></script>
<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script src="~/Scripts/jqxcore.js"></script>
<script src="~/Scripts/jqxdata.js"></script>
<script src="~/Scripts/jqxtreemap.js"></script>
<script src="~/Scripts/jqxbuttons.js"></script>
<script src="~/Scripts/jqxangular.js"></script>
<script src="~/Scripts/demos.js"></script>

Index cshtml

@{
    ViewBag.Title = "Index";
}



@section scripts
{
    <!-- CSS -->
<link href="~/Content/jqx.base.css" rel="stylesheet" />
    <!-- JS -->
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.7/angular.min.js"></script>
<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script src="~/Scripts/jqxcore.js"></script>
<script src="~/Scripts/jqxdata.js"></script>
<script src="~/Scripts/jqxtreemap.js"></script>
<script src="~/Scripts/jqxbuttons.js"></script>
<script src="~/Scripts/jqxangular.js"></script>
<script src="~/Scripts/demos.js"></script>


    <script type="text/javascript">

        var myApp = angular.module('myApp', ["jqwidgets"]);
        myApp.controller('TreemapCtrl', function ($scope, $http) {

            $scope.PopulationData;
            $scope.treeMapSettings;



            $http.get("GetPopulationList").success(function (data) {

                $scope.PopulationData = data;

            }).error(function (data) {

                console.log('Something Wrong');

            });

            $scope.treeMapSettings =
                {
                    width: 800,
                    showLegend: false,
                    height: 400,
                    colorRange: 100,
                    colorMode: 'autoColors',
                    baseColor: '#52CBFF'
                }

        });



    </script>

}

<h2>TreeMap directive for AngularJS </h2>

<div ng-app="myApp" ng-controller="TreemapCtrl" style="margin-top:10px;">

    <jqx-tree-map jqx-source="PopulationData" jqx-settings="treeMapSettings"></jqx-tree-map>

</div>

Output