Saturday, 24 October 2015

Best Web Dev Article of September 2015 @ CodeProject.Com

Hello Friends, 

 The Code Project®, one of the world’s largest independent online developer communities, announced “Best Web Dev Article of September 2015”. Its nice feeling for me to win “Best Web Dev Article of September 2015” for fourth time. Today got an email from CodeProject team announcing that I am once more selected as a “Best Web Dev Article of September 2015.” My Article on CodeProject  http://www.codeproject.com/Articles/1034593/Angular-js-with-ASP-NET-MVC-Insert-Update-Delete


http://www.codeproject.com/script/Awards/Winners.aspx?obtid=2&cmpTpId=1&cid=846


have a look at some part of Email send by CodeProject team.








Once again I would like to say thanks to all my readers without their helps and encouragement it can’t be possible. and a big thanks to CodeProject team for selected me as a winner.
Take a look CodeProject to view my contributions and awards at CodeProject.Com.


Happy Programming!!
 
Don’t forget to leave your feedback and comments below!
 
If you have any query mail me to Sujeet.bhujbal@gmail.com     
 
Regards
Sujeet Bhujbal
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Wednesday, 30 September 2015

Angular js with ASP.NET MVC Insert Update Delete

Download Source Code



Introduction



Angular js with ASP.NET MVC is more popular now days and for beginners, I will tell you what is angular js  and show you a practical example of  ASP.NET MVC for inserting, deleting and displaying data using angular js.
Basically, this article will demonstrate with example the following:
  • Step by step procedure to create asp.net MVC project with angular js
  • How to install angular js package in ASP.NET MVC project 
  • How to create module, service and controller in angular js
  • How to get data from server side(C#)
  • How to bind/Load/Fill data from Server side to html page using angular js
  • How to perform insert, edit, update and delete operation on view  using angular js data binding

What you need

As all of you have visual studio 2012 so that I am using visual studio 2012 with Asp.net MVC 4.

Let's get started

Ok, first of all, you have to create a new MVC project by selecting New Project in Visual Studio 2012... on the start screen, then drill down to Templates => Visual C# => Web => ASP.NET MVC 4 Web Application  and can name it as you prefer. 






Select basic Asp.net MVC 4 project template
Include Angular in our project via Nuget packages, you can also download it from angular website. We have to install angular js package to our project for this please does below steps
Open the Package manager Console from View => Other Windows => Package Manager Console as shown below:
1.       Install Angular js package by using below command

2.       As Angular js Route package is not come with angular js we have to install separate package for angular js route. so please Install Angular js package by using below command



Step 1 :  Create Model in MVC project

As all of you knows that in MVC we have model for database record we will create first Model using entity framework
Create Employee table with this schema. ID is primary key and it is Identity





Add new Entity Data Model using Entity framework in Models folder
Select Database name from dropdown
We have
Step 2 :  Create Controller in MVC project
Add new controller named as  HomeController




Add below methods to HomeController
  public ActionResult Index()
        {
            return View();
        }


        public JsonResult getAll()
        {
            using (SampleDBEntities dataContext = new SampleDBEntities())
            {
                var employeeList = dataContext.Employees.ToList();
                return Json(employeeList, JsonRequestBehavior.AllowGet);
            }
        }

        public JsonResult getEmployeeByNo(string EmpNo)
        {
            using (SampleDBEntities dataContext = new SampleDBEntities())
            {
                int no = Convert.ToInt32(EmpNo);
                var employeeList = dataContext.Employees.Find(no);
                return Json(employeeList, JsonRequestBehavior.AllowGet);
            }
        }
        public string UpdateEmployee(Employee Emp)
        {
            if (Emp != null)
            {
                using (SampleDBEntities dataContext = new SampleDBEntities())
                {
                    int no = Convert.ToInt32(Emp.Id);
                    var employeeList = dataContext.Employees.Where(x => x.Id == no).FirstOrDefault();
                    employeeList.name = Emp.name;
                    employeeList.mobil_no = Emp.mobil_no;
                    employeeList.email = Emp.email;
                    dataContext.SaveChanges();
                    return "Employee Updated";
                }
            }
            else
            {
                return "Invalid Employee";
            }
        }
        public string AddEmployee(Employee Emp)
        {
            if (Emp != null)
            {
                using (SampleDBEntities dataContext = new SampleDBEntities())
                {
                    dataContext.Employees.Add(Emp);
                    dataContext.SaveChanges();
                    return "Employee Updated";
                }
            }
            else
            {
                return "Invalid Employee";
            }
        }


        public string DeleteEmployee(Employee Emp)
        {
            if (Emp != null)
            {
                using (SampleDBEntities dataContext = new SampleDBEntities())
                {
                    int no = Convert.ToInt32(Emp.Id);
                    var employeeList = dataContext.Employees.Where(x => x.Id == no).FirstOrDefault();
                    dataContext.Employees.Remove(employeeList);
                    dataContext.SaveChanges();
                    return "Employee Deleted";
                }
            }
            else
            {
                return "Invalid Employee";
            }
        }
In the above method
1.       1.            getAll() Method will return all the emloyees in json format
2.       getEmployeeByNo() Method will return employee details by employee number
3.       UpdateEmployee() method will update existing employee details
4.       AddEmployee() method will add new employee to database
5.       DeleteEmployee() method will delete existing employee



Right click on Index() and click add View . so index.cshtml automatically will be created

Now design a table to accept inputs from user in CRUD page. Add below html to index.cshtml

Right click on Index() and click add View . so index.cshtml automatically will be created
In angular js we have used following directives
1. ng-Click : The ngClick directive allows you to specify custom behavior when an element is clicked.
2. ng-controller: The ngController directive attaches a controller class to the view
3. ng-Repeat  :  The ngRepeat directive instantiates a template once per item from a collection. Each template instance gets its own scope, where the given loop variable is set to the current collection item, and $index is set to the item index or key.
4. ng-model :  ngModel is responsible for   Binding the view into the model, which other directives such as input, textarea or select require.


<div ng-controller="myCntrl">
     <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
  <script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>

   <h1> Employee Details Page</h1>

    <br />

        <input type="button" class="btnAdd" value=" Add Employee" ng-click="AddEmployeeDiv()" />


    <div class="divList">
        <p class="divHead">Employee List</p>
        <table cellpadding="12" class="table table-bordered table-hover">
            <tr>
                <td><b>ID</b></td>
                <td><b>Name</b></td>
                <td><b>Email</b></td>
                <td><b>Age</b></td>
                <td><b>Actions</b></td>
            </tr>
            <tr ng-repeat="employee in employees">
                <td>
                    {{employee.Id}}
                </td>
                <td>
                    {{employee.name}}
                </td>
                <td>
                    {{employee.email}}
                </td>
                <td>
                    {{employee.Age}}
                </td>
                <td>
                    <span ng-click="editEmployee(employee)" class="btnAdd">Edit</span>
                    <span ng-click="deleteEmployee(employee)" class="btnRed">Delete</span>
                </td>
            </tr>
        </table>
    </div>

    <div ng-show="divEmployee">
        <p class="divHead">{{Action}} Employee</p>
        <table>
            <tr>
                <td><b>Id</b></td>
                <td>
                    <input type="text" disabled="disabled" ng-model="employeeId" />
                </td>
            </tr>
            <tr>
                <td><b>Name</b></td>
                <td>
                    <input type="text" ng-model="employeeName" />
                </td>
            </tr>
            <tr>
                <td><b>Email</b></td>
                <td>
                    <input type="text" ng-model="employeeEmail" />
                </td>
            </tr>
            <tr>
                <td><b>Age</b></td>
                <td>
                    <input type="text" ng-model="employeeAge" />
                </td>
            </tr>
            <tr>
                <td colspan="2">
                    <input type="button" class="btnAdd" value="Save" ng-click="AddUpdateEmployee()" />
                </td>
            </tr>
        </table>
    </div>
</div>

STEP 3: Writing Angular js MVC code
So We are ready with our Model View and Controller now we have to write angular js code
Create three JavaScript files  as shown in below
1.       Controller.js
2.       Module.js
3.       Service.js




1.       Module .js
angular.module is used to configure the $injector.  The module is a container for the different parts of an application



2.       Service.js
Service .js file is used for calling server side code by using $http. In Service.js file we have created an angular js service called as myService. To call MVC HomeControllers insert update,delete function we have created 3 functions in service.js


app.service("myService", function ($http) {

    //get All Eployee
    this.getEmployees = function () {
        debugger;
        return $http.get("Home/GetAll");
    };

    // get Employee By Id
    this.getEmployee = function (employeeID) {
        var response = $http({
            method: "post",
            url: "Home/getEmployeeByNo",
            params: {
                id: JSON.stringify(employeeID)
            }
        });
        return response;
    }

    // Update Employee
    this.updateEmp = function (employee) {
        var response = $http({
            method: "post",
            url: "Home/UpdateEmployee",
            data: JSON.stringify(employee),
            dataType: "json"
        });
        return response;
    }

    // Add Employee
    this.AddEmp = function (employee) {
        var response = $http({
            method: "post",
            url: "Home/AddEmployee",
            data: JSON.stringify(employee),
            dataType: "json"
        });
        return response;
    }

    //Delete Employee
    this.DeleteEmp = function (employeeId) {
        var response = $http({
            method: "post",
            url: "Home/DeleteEmployee",
            params: {
                employeeId: JSON.stringify(employeeId)
            }
        });
        return response;
    }
});



3.       Controller.js

In controller.js we have created new controller named myCntrl. In controller we are calling method of myService in controller.js


app.controller("myCntrl", function ($scope, myService) {
    $scope.divEmployee = false;
    GetAllEmployee();
    //To Get All Records 
    function GetAllEmployee() {
        debugger;
        var getData = myService.getEmployees();
        debugger;
        getData.then(function (emp) {
            $scope.employees = emp.data;
        },function () {
            alert('Error in getting records');
        });
    }

    $scope.editEmployee = function (employee) {
        debugger;
        var getData = myService.getEmployee(employee.Id);
        getData.then(function (emp) {
            $scope.employee = emp.data;
            $scope.employeeId = employee.Id;
            $scope.employeeName = employee.name;
            $scope.employeeEmail = employee.email;
            $scope.employeeAge = employee.Age;
            $scope.Action = "Update";
            $scope.divEmployee = true;
        },
        function () {
            alert('Error in getting records');
        });
    }

    $scope.AddUpdateEmployee = function ()
    {
        debugger;
        var Employee = {
            Name: $scope.employeeName,
            Email: $scope.employeeEmail,
            Age: $scope.employeeAge
        };
        var getAction = $scope.Action;

        if (getAction == "Update") {
            Employee.Id = $scope.employeeId;
            var getData = myService.updateEmp(Employee);
            getData.then(function (msg) {
                GetAllEmployee();
                alert(msg.data);
                $scope.divEmployee = false;
            }, function () {
                alert('Error in updating record');
            });
        } else {
            var getData = myService.AddEmp(Employee);
            getData.then(function (msg) {
                GetAllEmployee();
                alert(msg.data);
                $scope.divEmployee = false;
            }, function () {
                alert('Error in adding record');
            });
        }
    }

    $scope.AddEmployeeDiv=function()
    {
        ClearFields();
        $scope.Action = "Add";
        $scope.divEmployee = true;
    }

    $scope.deleteEmployee = function (employee)
    {
        var getData = myService.DeleteEmp(employee.Id);
        getData.then(function (msg) {
            GetAllEmployee();
            alert('Employee Deleted');
        },function(){
            alert('Error in Deleting Record');
        });
    }

    function ClearFields() {
        $scope.employeeId = "";
        $scope.employeeName = "";
        $scope.employeeEmail = "";
        $scope.employeeAge = "";
    }
});





STEP 4 : Call Angular js
In the final we have to call angular js .We are calling angular js in layout.cshtml page

<!DOCTYPE html>
<html ng-app="myApp">
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width" />

    <title>@ViewBag.Title</title>

    <script src="~/Scripts/angular.min.js"></script>
    <script src="~/Content/Angular/Module.js"></script>
    <script src="~/Content/Angular/Service.js"></script>
    <script src="~/Content/Angular/Controller.js"></script>
    @Styles.Render("~/Content/css")
    <style>
       
    </style>
</head>
<body>
    @RenderBody()

    @Scripts.Render("~/bundles/jquery")

    @RenderSection("scripts", required: false)
</body>
</html>


By using this, you have successfully inserted data in the database and you have also shown this in the gridview. Click on Add Employee


Happy Programming!!

Don’t forget to leave your feedback and comments below!

If you have any query mail me to Sujeet.bhujbal@gmail.com     


 Regards
Sujeet Bhujbal
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