Yogesh Khandala: February 2015

Friday 13 February 2015

count specific character in string Asp.Net

You could do this:

int count = test.Split('&').Length - 1;

Or with LINQ:

test.Count(x => x == '&');

Wednesday 4 February 2015

What is AngularJS?

AngularJS is a JavaScript framework for organizing HTML code in a more structural, clear and succinct mode. This client-side technology provides easy and light code in order to make developing and even designing as a simple task. AngularJS eliminates most of redundant code specially in CRUD web application. It is a MV(Whatever you like) pattern and not just a MVC.
There are two kinds of accessories which help us to make a bridge between user interface and the core of business and data layer.
Library: These types are set of functions such as JQuery and whenever you use some of them ($.ajax) it will call related function to handle functions.
Frameworks: These types are specific structure for implementation application and developer have to follow these structure. Such as durandal and ember.
AngularJS has different approach to work out our needs, angular embeds new properties inside HTML tags such as “ng-model”, “ng-repeat” which are known as Directives in order to fade our barriers to match and transform data.
On the other hand AngularJS has mingled Ajax and HTML DOM in a good structure which I will describe it more as follow:

Angular Advantages:

It is very good for CRUD web application
It makes testing easy in CRUD web application
You need to write less code
You can run your code more quickly
One of the most popular and famous features in the AngularJS is two way and simple binding

<input type="text" ng-model="simpleBinding" /><span>{{simpleBinding}}</span>

You do not need to modify HTML DOM
By the aid of directives your tasks are more easy and time saving
By its architecture in MVC or in the better word MVW, decoupling is real and excellent

Monday 2 February 2015

ASP.NET Application Development Using MVC

Overview

ASP.NET provides the MVC framework as an alternate to the ASP.NET Web Forms pattern for developing web applications. MVC (Model-View-Controller) is a lightweight, highly testable presentation framework that is integrated with the existing ASP.NET features such as Master Pages and Membership-based authentication.

Introduction

The System.Web.Mvc namespace is for ASP.NET MVC. MVC is a standard Design Pattern. MVC has the following components:

Controller

Model

View

Background

In this demonstration, I will design a database using SQL Server Management Studio 2005. I will develop an ASP.NET MVC application and will describe all of its parts.

Let’s Get Started

Open SQL Management Studio 2005. Crate a database and name it Inventory. Design a database table like below:

Figure 1

Open Microsoft Visual Studio 2010
Create a new project (File> New> Project> Visual C#): ASP.NET MVC 3 Web Application
Named it ASPNETMVCApplication
Click on the OK button

Figure 2

Select a template for Internet Application
View engine to Razor
Create a unit test project to uncheck
Click on the OK button

Figure 3

The default project will be created. Now Add Library Package Reference. We will use a .NET Framework data-access technology known as the Entity Framework. The Entity Framework (often referred to as “EF”) supports a development paradigm called code-first. Code-first allows you to create model objects by writing simple classes. You can then have the database created on the fly from your classes, which enables a very clean and rapid development workflow.
We'll start by using the NuGet package manager (automatically installed by ASP.NET MVC 3) to add the EFCodeFirst library to the ASPNETMVCApplication project. This library lets us use the code-first approach. To add Entity Framework reference:
From the Tools menu, select Library Package Manager and then Add Library Package Reference.

Figure 4

In the Add Library Package Reference window, click online.

Figure 5

Click the NuGet Official package source.

Figure 6

Find EFCodeFirst, click on install.

Figure 7

Click on I Accept. Entity Framework will install and will add a reference to the project.

Figure 8

Click on the Close button.

Figure 9

Adding a Model Class

Right click on Models from Solution Explorer
Select Add
Select Class
Name it Book.cs

Figure 10

Figure 11

Add the following properties in the Book.cs file:

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namespace ASPNETMVCApplication.Models
{
    public class Book
    {
        public Int64 Id { get; set; }
        public String Title { get; set; }
        public String ISBN { get; set; }
        public Decimal Price { get; set; }
    }
}

Add another class the way you did for Book.cs and name it BookDBContext.cs. Add a System.Data.Entity namespace reference in the BookDBContext.cs file.

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using System.Data.Entity;

Add the following code in the BookDBContext class. And derive it from the DbContext class so that all data operations can be handled by the Books property.
Note: The property name Books must be the same as the database table name Books.
Here is the complete code:

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using System;
using System.Web;
using System.Data.Entity;

namespace ASPNETMVCApplication.Models
{
    public class BookDBContext:DbContext
    {
        public DbSet<Book> Books { get; set; } 
    }
}

Add a connection string in the web.config file. Remember, the connection string name must be the same as BookDBContext.

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<connectionStrings>
    <add name="BookDBContext" 
      connectionString="data source=Home-PC;
                        uid=sa;pwd=1234;Initial Catalog=Inventory" 
      providerName="System.Data.SqlClient" />
</connectionStrings>

Adding the Controller

Right click on Controller from Solution Explorer
Select Add
Select Controller
Name it BookController
Add action methods for Create, Update, Delete, and Details scenarios to Checked

Figure 12

Figure 13

It will add the following code:

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namespace ASPNETMVCApplication.Controllers
{
    public class BookController : Controller
    {
        //
        // GET: /Book/

        public ActionResult Index()
        {
            return View();
        }

        //
        // GET: /Book/Details/5

        public ActionResult Details(int id)
        {
            return View();
        }

        //
        // GET: /Book/Create

        public ActionResult Create()
        {
            return View();
        } 

        //
        // POST: /Book/Create

        [HttpPost]
        public ActionResult Create(FormCollection collection)
        {
            try
            {
                // TODO: Add insert logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }
        
        //
        // GET: /Book/Edit/5
 
        public ActionResult Edit(int id)
        {
            return View();
        }

        //
        // POST: /Book/Edit/5

        [HttpPost]
        public ActionResult Edit(int id, FormCollection collection)
        {
            try
            {
                // TODO: Add update logic here
 
                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }

        //
        // GET: /Book/Delete/5
 
        public ActionResult Delete(int id)
        {
            return View();
        }

        //
        // POST: /Book/Delete/5

        [HttpPost]
        public ActionResult Delete(int id, FormCollection collection)
        {
            try
            {
                // TODO: Add delete logic here
 
                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }
    }
}

Now add the following namespaces in the BookController.cs file:

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using System.Linq;
using ASPNETMVCApplication.Models;

Declare a global instance variable of the BookDBContext class in the BookController class.

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BookDBContext _db = new BookDBContext();

Add the following code in the Index() method:

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public ActionResult Index()
{
   var books = from book in _db.Books
               select book;

   return View(books.ToList());
}

This is the LINQ code for getting books and books.ToList() to display the book list in the View.
Now right click on Solution and select Build to build the solution.

Adding the View

Right click in the Index method
Select View
Create a strongly-typed view to Checked
Select Model class to Book (ASPNETMVCApplication.Models)
Scaffold template to List
Click on the OK button

Figure 14

It will add the Index.cshtml file.

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@model IEnumerable<ASPNETMVCApplication.Models.Book>

@{
    ViewBag.Title = "Index";
}

<h2>Index</h2>

<p>
    @Html.ActionLink("Create New", "Create")
</p>
<table>
    <tr>
        <th></th>
        <th>
            Title
        </th>
        <th>
            ISBN
        </th>
        <th>
            Price
        </th>
    </tr>

@foreach (var item in Model) {
    <tr>
        <td>
            @Html.ActionLink("Edit", "Edit", new { id=item.Id }) |
            @Html.ActionLink("Details", "Details", new { id=item.Id }) |
            @Html.ActionLink("Delete", "Delete", new { id=item.Id })
        </td>
        <td>
            @item.Title
        </td>
        <td>
            @item.ISBN
        </td>
        <td>
            @String.Format("{0:F}", item.Price)
        </td>
    </tr>
}

</table>

Now, add the Create View.

Adding the Create View

Right click on the Create method
Select View
Create a strongly-typed view to Checked
Select Model class to Book (ASPNETMVCApplication.Models)
Scaffold template to Create
Click on the OK button

It will add the Create.cshtml file.

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@model ASPNETMVCApplication.Models.Book

@{
    ViewBag.Title = "Create";
}

<h2>Create</h2><script src="@Url.Content("~/Scripts/jquery.validate.min.js")" 
  type="text/javascript"></script><script 
  src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" 
  type="text/javascript"></script>@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)
    <fieldset>
        <legend>Book</legend><div class="editor-label">
            @Html.LabelFor(model => model.Title)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Title)
            @Html.ValidationMessageFor(model => model.Title)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.ISBN)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model =>

Now add the following code in the Create method in the BookController class.

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[HttpPost]
public ActionResult Create(FormCollection collection)
{
    try
    {
        Book book = new Book();
        if (ModelState.IsValid)
        {                   
            book.Title = collection["Title"].ToString();
            book.ISBN = collection["ISBN"].ToString();
            book.Price = Convert.ToDecimal(collection["Price"]);

            _db.Books.Add(book);
            _db.SaveChanges();

            return RedirectToAction("Index");
        }
        else
        {
            return View(book);
        }
    }
    catch
    {
        return View(); 
    }
}

Now we will add the Edit View.

Adding the Edit View

Right click on the Edit method
Select View
Create a strongly-typed view to Checked
Select Model class to Book (ASPNETMVCApplication.Models)
Scaffold template to Edit
Click on the OK button

Figure 15

It will add the Edit.cshtml file:

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@model ASPNETMVCApplication.Models.Book

@{
    ViewBag.Title = "Edit";
}

<h2>Edit</h2><script src="@Url.Content("~/Scripts/jquery.validate.min.js")" 
  type="text/javascript"></script><script 
  src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" 
  type="text/javascript"></script>@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)
    <fieldset>
        <legend>Book</legend>@Html.HiddenFor(model => model.Id)

        <div class="editor-label">
            @Html.LabelFor(model => model.Title)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Title)
            @Html.ValidationMessageFor(model => model.Title)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.ISBN)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model =>

Now add the following code in the Edit method in the BookController class.

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public ActionResult Edit(int id)
{
   Book book = _db.Books.Find(id);
   if (book == null)
      return RedirectToAction("Index");

   return View(book);
}

[HttpPost]
public ActionResult Edit(int id, FormCollection collection)
{
   try
   {
       var book = _db.Books.Find(id);

       UpdateModel(book);
       _db.SaveChanges();              
 
        return RedirectToAction("Index");
    }
    catch
    {
        ModelState.AddModelError("", "Edit Failure, see inner exception");
       return View();
    }
}

Now we will add the Details View.

Adding the Details View

Right click on the Edit method
Select View
Create a strongly-typed view to Checked
Select Model class to Book (ASPNETMVCApplication.Models)
Scaffold template to Details
Click on the OK button

Figure 16

It will add the Details.cshtml file:

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@model ASPNETMVCApplication.Models.Book

@{
    ViewBag.Title = "Details";
}

<h2>Details</h2><fieldset>
    <legend>Book</legend><div class="display-label">Title</div>
      <div class="display-field">@Model.Title</div>
      <div class="display-label">ISBN</div>
      <div class="display-field">@Model.ISBN</div>
      <div class="display-label">Price</div>
      <div class="display-field">@String.Format("{0:F}", Model.Price)</div>
      </fieldset>
<p>
    @Html.ActionLink("Edit", "Edit", new { id=Model.Id }) |
    @Html.ActionLink("Back to List", "Index")
</p>

Add the following code to the Details method of the BookController class.

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public ActionResult Details(int id)
{
   Book book = _db.Books.Find(id);

    if (book == null)
      return RedirectToAction("Index");

     return View("Details", book);
}

Now we will add the Delete View.

Adding the Delete View

Right click on the Edit method
Select View
Create a strongly-typed view to Checked
Select Model class to Book (ASPNETMVCApplication.Models)
Scaffold template to Delete
Click on the OK button

Figure 17

It will add the Delete.cshtml file.

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@model ASPNETMVCApplication.Models.Book

@{
    ViewBag.Title = "Delete";
}

<h2>Delete</h2><h3>Are you sure you want to delete this?</h3><fieldset>
    <legend>Book</legend><div class="display-label">Title</div>
    <div class="display-field">@Model.Title</div>
    <div class="display-label">ISBN</div>
    <div class="display-field">@Model.ISBN</div>
    <div class="display-label">Price</div>
    <div class="display-field">@String.Format("{0:F}", Model.Price)</div>
    </fieldset>
@using (Html.BeginForm()) {
    <p>
        <input type="submit" value="Delete" /> |
        @Html.ActionLink("Back to List", "Index")
    </p>
}

Add the following code to the Delete method in the BookController class.

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public ActionResult Delete(int id)
{
    Book book = _db.Books.Find(id);
    if (book == null)
        return RedirectToAction("Index");

    return View(book);
}

[HttpPost]
public ActionResult Delete(int id, FormCollection collection)
{
  Book book = _db.Books.Find(id);
  _db.Books.Remove(book);
  _db.SaveChanges();

  return RedirectToAction("Index");
}

Now run the application. Type /Book in the URL and remember that the port number may be different in your case.

Figure 17

Click Create New Link to add a new book.

Figure 18

Figure 19

This way you can edit, delete, and view details of the books.

Single Page Application (SPA) Web API ,Using AngularJS, and MVC 5

For this you need Visual Studio 2013. You can download Visual Studio 2013 using the following link: Visual Studio Community 2013.

In traditional web applications, the client (browser) initiates the communication with the server by requesting a page. The server then processes the request and sends the HTML of the page to the client. In subsequent interactions with the page, for example the user navigates to a link or submits a form with data, a new request is sent to the server and the flow starts again. The server processes the request and sends a new page to the browser in response to the new action requested by the client.

traditional web applications

Image 1.

In Single-Page Applications (SPAs) the entire page is loaded into the browser after the initial request, but subsequent interactions take place using Ajax requests. This means that the browser must update only the portion of the page that has changed; there is no need to reload the entire page. The SPA approach reduces the time taken by the application to respond to user actions, resulting in a more fluid experience.

Single-Page Applications (SPAs) are Web apps that load a single HTML page and dynamically update that page as the user interacts with the app.

SAP Lifecycle

Image 2.

Now we will learn this by creating a sample application. In this SPA example I will do CRUD operations on the Student table using the Web API and MVC.

CRUD operation on Student table

Image 3.

The following is my Data Table in design mode:

Image 4.

The script of my Student Table is:

CREATE TABLE [dbo].[Student](
[StudentID] [int] IDENTITY(1,1) NOT NULL,
[Name] [varchar](50) NULL,
[Email] [varchar](500) NULL,
[Class] [varchar](50) NULL,
[EnrollYear] [varchar](50) NULL,
[City] [varchar](50) NULL,
[Country] [varchar](50) NULL,
CONSTRAINT [PK_Student] PRIMARY KEY CLUSTERED
(
[StudentID] 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

Open Visual Studio 2013 then click New Project.

Image 5.

Select Web -> ASP.NET Web Application then provide I a name. Then click OK.

Image 6.

Select Single Page Application from the template option. Then click OK.

Now right-click on the Models Folder then select Add -> ADO.NET Entity Data Model.

Image 7.

Image 8.

Provide It a name.

designer from database

Image 9.

Image 10.

Image 11.

Image 12.

Image 13.

Now we will add AngularJS references using NuGet. Right-click on Solution Explorer.

Image 14.

Image 15.

Image 16.

Image 17.

Now we will add a Web API so right-click on the controller folder then select Add -> Controller.

add controller

Image 18.

Image 19.

Image 20.

ManageStudentsInfoAPIController.cs is:

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Data.Entity.Infrastructure;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using System.Web.Http.Description;
using SPA_MVC_StudentApp.Models;
namespace SPA_MVC_StudentApp.Controllers
{
public class ManageStudentsInfoAPIController : ApiController
{
private SchoolManagementEntities db = new SchoolManagementEntities();
// GET: api/ManageStudentsInfoAPI
public IQueryable<Student> GetStudent()
{
return db.Student;
}
// GET: api/ManageStudentsInfoAPI/5
[ResponseType(typeof(Student))]
public IHttpActionResult GetStudent(int id)
{
Student student = db.Student.Find(id);
if (student == null)
{
return NotFound();
}
return Ok(student);
}
// PUT: api/ManageStudentsInfoAPI/5
[ResponseType(typeof(void))]
public IHttpActionResult PutStudent(int id, Student student)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
if (id != student.StudentID)
{
return BadRequest();
}
db.Entry(student).State = EntityState.Modified;
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!StudentExists(id))
{
return NotFound();
}
else
{
throw;
}
}
return StatusCode(HttpStatusCode.NoContent);
}
// POST: api/ManageStudentsInfoAPI
[ResponseType(typeof(Student))]
public IHttpActionResult PostStudent(Student student)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
db.Student.Add(student);
db.SaveChanges();
return CreatedAtRoute("DefaultApi", new { id = student.StudentID }, student);
}
// DELETE: api/ManageStudentsInfoAPI/5
[ResponseType(typeof(Student))]
public IHttpActionResult DeleteStudent(int id)
{
Student student = db.Student.Find(id);
if (student == null)
{
return NotFound();
}
db.Student.Remove(student);
db.SaveChanges();
return Ok(student);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
db.Dispose();
}
base.Dispose(disposing);
}
private bool StudentExists(int id)
{
return db.Student.Count(e => e.StudentID == id) > 0;
}
}
}

Now again right-click on the Controller folder then select Add -> Controller.

add another controller

Image 21.

Image 22.

Image 23.

After adding ManageStudentInfo Controller we need to add a view.

add view

Image 24.

Index.cshtml

@{
ViewBag.Title = "SPA";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<link href="~/Content/bootstrap.min.css" rel="stylesheet" />
<body data-ng-app="ApplicationModule">
<div>
<div>
<div>
<table cellpadding="5" cellspacing="6" width="100%" style="background-color:whitesmoke; border:solid 4px green;">
<tr>
<td style="border: solid 1px gray; width:170px; text-align:center;"><a href="showstudents"> Show All Students </a></td>
<td style="border: solid 1px gray; width:170px; text-align:center;"><a href="addstudent"> Add New Student </a></td>
<td></td>
</tr>
</table>
</div>
<div>
<div data-ng-view></div>
</div>
</div>
</div>
</body>
@section scripts{
<script type="text/javascript" src="@Url.Content("~/Scripts/angular.js")"></script>
<script type="text/javascript" src="@Url.Content("~/Scripts/angular-route.min.js")"></script>
<script type="text/javascript" src="@Url.Content("~/MyScripts/Module.js")"></script>
<script src="~/MyScripts/Services.js"></script>
<script type="text/javascript" src="@Url.Content("~/MyScripts/ShowStudentsController.js")"></script>
<script type="text/javascript" src="@Url.Content("~/MyScripts/AddStudentController.js")"></script>
<script type="text/javascript" src="@Url.Content("~/MyScripts/EditStudentController.js")"></script>
<script type="text/javascript" src="@Url.Content("~/MyScripts/DeleteStudentController.js")"></script>
}

Note: I will add all these scripts in the following.

Here in this example we will perform the following operations:

ShowAllStudent
AddStudent
EditStudent
DeleteStudent

So we will add a partial view for all these. So right-click on Views then select the ManageStudentInfo folder. Like the following.

manage stdio info

Image 25.

ShowAllStudent.cshtml

<table><tr><td height="10px"></td></tr></table>
<table cellpadding="4" cellspacing="4" width="90%" align="center"
style="background-color: skyblue; border:solid 2px red; padding-top:20px;">
<thead>
<tr style="background-color:#F5F5F5;">
<th>Student ID</th>
<th>Name</th>
<th>Email</th>
<th>Class</th>
<th>Enroll Year</th>
<th>City</th>
<th>Country</th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr data-ng-repeat="Stud in Students">
<td>{{Stud.studentID}}</td>
<td>{{Stud.name}}</td>
<td>{{Stud.email}}</td>
<td>{{Stud.class}}</td>
<td>{{Stud.enrollYear}}</td>
<td>{{Stud.city}}</td>
<td>{{Stud.country}}</td>
<td><a ng-click="editStudent(Stud.studentID)">Edit</a></td>
<td><a ng-click="deleteStudent(Stud.studentID)">Delete</a></td>
</tr>
</tbody>
</table>

Add the same for AddStudent, EditStudent, DeleteStudent partial view. And use the following code.

AddStudent.cshtml

@{
ViewBag.Title = "Add New Student";
}
<table><tr><td height="10px"></td></tr></table>
<table cellpadding="4" cellspacing="4" width="70%" align="center" style="background-color: skyblue;
border:solid 2px red; padding-top:20px;">
<tr><td colspan="3" style="background-color:gray; font-size:18pt;
font-weight:bold; height:30px; text-align:center;">Add New Student</td></tr>
<tr>
<td style="text-align:right;">Student ID</td>
<td><input type="text" ng-model="StudentID" /> </td>
</tr>
<tr>
<td style="text-align:right;">Name</td>
<td><input type="text" ng-model="Name" /> </td>
</tr>
<tr>
<td style="text-align:right;">Email</td>
<td><input type="text" ng-model="Email" /> </td>
</tr>
<tr>
<td style="text-align:right;">Class</td>
<td><input type="text" ng-model="Class" /> </td>
</tr>
<tr>
<td style="text-align:right;">Enroll Year</td>
<td><input type="text" ng-model="EnrollYear" /> </td>
</tr>
<tr>
<td style="text-align:right;">City</td>
<td><input type="text" ng-model="City" /> </td>
</tr>
<tr>
<td style="text-align:right;">Country</td>
<td><input type="text" ng-model="Country" /> </td>
</tr>
<tr>
<td></td>
<td>
<input type="button" value="Save" data-ng-click="save()" />
</td>
</tr>
</table>

DeleteStudent.cshtml

@{
ViewBag.Title = "Delete Student";
}
<table><tr><td height="10px"></td></tr></table>
<table cellpadding="4" cellspacing="4" width="70%" align="center" style="background-color: skyblue; border:solid 2px red; padding-top:20px;">
<tr><td colspan="3" style="background-color:gray; font-size:18pt; font-weight:bold; height:30px; text-align:center;">Delete Student Information</td></tr>
<tr>
<td style="text-align:right;">Student ID</td>
<td>{{Student.studentID}} </td>
</tr>
<tr>
<td style="text-align:right;">Name # </td>
<td> {{Student.name}} </td>
</tr>
<tr>
<td style="text-align:right;">Email # </td>
<td>{{Student.email}} </td>
</tr>
<tr>
<td style="text-align:right;">Class # </td>
<td>{{Student.class}} </td>
</tr>
<tr>
<td style="text-align:right;">Enroll Year # </td>
<td>{{Student.enrollYear}} </td>
</tr>
<tr>
<td style="text-align:right;">City # </td>
<td>{{Student.city}} </td>
</tr>
<tr>
<td style="text-align:right;">Country # </td>
<td>{{Student.country}} </td>
</tr>
<tr>
<td></td>
<td>
<input type="button" value="Delete" ng-click="delete()" />
</td>
</tr>
</table>

EditStudent.cshtml

@{
ViewBag.Title = "Edit Student";
}
<table><tr><td height="10px"></td></tr></table>
<table cellpadding="4" cellspacing="4" width="70%" align="center" style="background-color: skyblue; border:solid 2px red; padding-top:20px;">
<tr><td colspan="3" style="background-color:gray; font-size:18pt; font-weight:bold; height:30px; text-align:center;">Edit Student Information</td></tr>
<tr>
<td style="text-align:right;">Student ID</td>
<td><input type="text" ng-model="Student.studentID" /> </td>
</tr>
<tr>
<td style="text-align:right;">Name</td>
<td><input type="text" ng-model="Student.name" /> </td>
</tr>
<tr>
<td style="text-align:right;">Email</td>
<td><input type="text" ng-model="Student.email" /> </td>
</tr>
<tr>
<td style="text-align:right;">Class</td>
<td><input type="text" ng-model="Student.class" /> </td>
</tr>
<tr>
<td style="text-align:right;">Enroll Year</td>
<td><input type="text" ng-model="Student.enrollYear" /> </td>
</tr>
<tr>
<td style="text-align:right;">City</td>
<td><input type="text" ng-model="Student.city" /> </td>
</tr>
<tr>
<td style="text-align:right;">Country</td>
<td><input type="text" ng-model="Student.country" /> </td>
</tr>
<tr>
<td></td>
<td>
<input type="button" value="Save" ng-click="save()" />
<br />
<div>{{error}}</div>
</td>
</tr>
</table>

Now, open ManageStudentInfoController.cs and provide the following code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace SPA_MVC_StudentApp.Controllers
{
public class ManageStudentInfoController : Controller
{
// GET: ManageStudentInfo
public ActionResult Index()
{
return View();
}
public ActionResult AddNewStudent()
{
return PartialView("AddStudent");
}
public ActionResult ShowStudents()
{
return PartialView("ShowAllStudent");
}
public ActionResult EditStudent()
{
return PartialView("EditStudent");
}
public ActionResult DeleteStudent()
{
return PartialView("DeleteStudent");
}
}
}

Now add a new folder, MyScripts, to your solution.

And add the following JavaScript files.

Module.js
Services.js
ShowStudentsController.js
AddStudentController.js
EditStudentController.js
DeleteStudentController.js

Now provide the following code in every JavaScript file.

Module.js

var app = angular.module("ApplicationModule", ["ngRoute"]);
app.factory("ShareData", function () {
return { value: 0 }
});
//Showing Routing
app.config(['$routeProvider', '$locationProvider', function ($routeProvider, $locationProvider) {
debugger;
$routeProvider.when('/showstudents',
{
templateUrl: 'ManageStudentInfo/ShowStudents',
controller: 'ShowStudentsController'
});
$routeProvider.when('/addstudent',
{
templateUrl: 'ManageStudentInfo/AddNewStudent',
controller: 'AddStudentController'
});
$routeProvider.when("/editStudent",
{
templateUrl: 'ManageStudentInfo/EditStudent',
controller: 'EditStudentController'
});
$routeProvider.when('/deleteStudent',
{
templateUrl: 'ManageStudentInfo/DeleteStudent',
controller: 'DeleteStudentController'
});
$routeProvider.otherwise(
{
redirectTo: '/'
});
$locationProvider.html5Mode(true).hashPrefix('!')
}]);

Services.js

app.service("SPACRUDService", function ($http) {
//Read all Students
this.getStudents = function () {
return $http.get("/api/ManageStudentInfoAPI");
};
//Fundction to Read Student by Student ID
this.getStudent = function (id) {
return $http.get("/api/ManageStudentInfoAPI/" + id);
};
//Function to create new Student
this.post = function (Student) {
var request = $http({
method: "post",
url: "/api/ManageStudentInfoAPI",
data: Student
});
return request;
};
//Edit Student By ID
this.put = function (id, Student) {
var request = $http({
method: "put",
url: "/api/ManageStudentInfoAPI/" + id,
data: Student
});
return request;
};
//Delete Student By Student ID
this.delete = function (id) {
var request = $http({
method: "delete",
url: "/api/ManageStudentInfoAPI/" + id
});
return request;
};
});

ShowStudentsController.js

app.controller('ShowStudentsController', function ($scope, $location, SPACRUDService, ShareData) {
loadAllStudentsRecords();
function loadAllStudentsRecords()
{
var promiseGetStudent = SPACRUDService.getStudents();
promiseGetStudent.then(function (pl) { $scope.Students = pl.data },
function (errorPl) {
$scope.error = errorPl;
});
}
//To Edit Student Information
$scope.editStudent = function (StudentID) {
ShareData.value = StudentID;
$location.path("/editStudent");
}
//To Delete a Student
$scope.deleteStudent = function (StudentID) {
ShareData.value = StudentID;
$location.path("/deleteStudent");
}
});

AddStudentController.js

app.controller('AddStudentController', function ($scope, SPACRUDService) {
$scope.StudentID = 0;
$scope.save = function () {
var Student = {
StudentID: $scope.StudentID,
Name: $scope.Name,
Email: $scope.Email,
Class: $scope.Class,
EnrollYear: $scope.EnrollYear,
City: $scope.City,
Country: $scope.Country
};
var promisePost = SPACRUDService.post(Student);
promisePost.then(function (pl) {
alert("Student Saved Successfully.");
},
function (errorPl) {
$scope.error = 'failure loading Student', errorPl;
});
};
});

EditStudentController.js

app.controller("EditStudentController", function ($scope, $location, ShareData, SPACRUDService) {
getStudent();
function getStudent() {
var promiseGetStudent = SPACRUDService.getStudent(ShareData.value);
promiseGetStudent.then(function (pl)
{
$scope.Student = pl.data;
},
function (errorPl) {
$scope.error = 'failure loading Student', errorPl;
});
}
$scope.save = function () {
var Student = {
StudentID: $scope.Student.studentID,
Name: $scope.Student.name,
Email: $scope.Student.email,
Class: $scope.Student.class,
EnrollYear: $scope.Student.enrollYear,
City: $scope.Student.city,
Country: $scope.Student.country
};
var promisePutStudent = SPACRUDService.put($scope.Student.studentID, Student);
promisePutStudent.then(function (pl)
{
$location.path("/showstudents");
},
function (errorPl) {
$scope.error = 'failure loading Student', errorPl;
});
};
});

DeleteStudentController.js

app.controller("DeleteStudentController", function ($scope, $location, ShareData, SPACRUDService) {
getStudent();
function getStudent() {
var promiseGetStudent = SPACRUDService.getStudent(ShareData.value);
promiseGetStudent.then(function (pl) {
$scope.Student = pl.data;
},
function (errorPl) {
$scope.error = 'failure loading Student', errorPl;
});
}
$scope.delete = function () {
var promiseDeleteStudent = SPACRUDService.delete(ShareData.value);
promiseDeleteStudent.then(function (pl) {
$location.path("/showstudents");
},
function (errorPl) {
$scope.error = 'failure loading Student', errorPl;
});
};
});