Custom Paging In Angular-UI Grid

Read the below articles first to understand the AngularJS UI-grid.

• UI-Grid With AngularJS And WebAPI
• Export Data In Angular-UI-Grid Using WebAPI
• Filtering In UI-Grid With AngularJS And WebAPI
• Custom Scroll In AngularJS-UI-Grid With Web API
• Expandable grid in AngularJS-UI-Grid with Web API

Prerequisites

Visual Studio 2017 is the prerequisite to work with this article.

Thus, let's just use the sections with which we can implement the functionality.

• Create ASP.NET MVC 5 Application.
• Adding Model.
• Scaffolding in MVC 5.
• View in MVC 5.
• Log in an Entity Framework.

Create ASP.NET MVC 5 Application

In this section, we'll create an ASP.NET Web Application with the MVC 5 Project Template. Use the procedure given below.

Step 1

Open Visual Studio 2015 and click "New Project".

Step 2

Select "Web" from the left pane and create ASP.NET Web application.

Step 3

Select the MVC Project template in the next ASP.NET wizard.

Visual Studio automatically creates the MVC 5 Application, adds some files and folders to the solution.

Working with Entity Framework

Step 1

Right click on Models folder, click Add New Item, select ADO.NET Entity Data Model from Data template and give a name.

Step 2

Select EF Designer from the database.

Step 3

Make a new connection and select a connection, if you already have a connection.

Step 4

Select tables, view, and stored procedures and click Finish.

 

Here, you have 2 ways to add Web API class. You can add new Web API controller and select model class and data source that will generate API class with entity framework. Another way is to generate it manually. So in this article, I will create a manual API class.

Model Class

public class Employee {
    public int EmployeeID {
        get;
        set;
    }
    public string FirstName {
        get;
        set;
    }
    public string LastName {
        get;
        set;
    }
    public string City {
        get;
        set;
    }
    public string Region {
        get;
        set;
    }
    public string PostalCode {
        get;
        set;
    }
    public string Country {
        get;
        set;
    }
    public string Notes {
        get;
        set;
    }
}

Now, add a builder class.

//Entity set
public NORTHWNDEntities db = new NORTHWNDEntities();
/// <summary>
/// get employee list using linq
/// </summary>
/// <returns></returns>
public async Task < IEnumerable < Employee >> GetEmployee() {
    try {
        return await (from n in db.Employees select new Employee {
            EmployeeID = n.EmployeeID,
                FirstName = n.FirstName,
                LastName = n.LastName,
                City = n.City,
                Region = n.Region,
                PostalCode = n.PostalCode,
                Country = n.Country,
                Notes = n.Notes
        }).OrderByDescending(n => n.EmployeeID).ToListAsync();
    } catch (Exception ex) {
        throw ex;
    }
}

If you want to use a stored procedure, then read my previous article.

Web API

Right click on controller folder, click Add and select Controller and select Web API 2 Controller – Empty.

[RoutePrefix("api/EmployeeAPI")]
public class EmployeeAPIController: ApiController {
    private readonly EmployeeVMBuilder _employeeVMBuilder = new EmployeeVMBuilder();
    // GET api/<controller>
    [Route("GetEmployee")]
    public async Task < IEnumerable < Employee >> GetEmployee() {
        return await _employeeVMBuilder.GetEmployee();
    }
}

Thus, we are done with Entity framework and API Controller here. Now, install the files given below, using "Manage NuGet Package". 

Add JavaScript files and CSS reference in BundleConfig.cs.

bundles.Add(new ScriptBundle("~/bundles/angular").Include(
"~/Scripts/angular.js",
"~/Scripts/angular-route.js",
"~/Scripts/ui-grid.js"));
bundles.Add(new ScriptBundle("~/bundles/employee").Include(
"~/Angular/app.js",
"~/Angular/Services/employeeService.js",
"~/Angular/Controller/employeeController.js"));

 And render on _layout.cshtml.

<div class="navbar-collapse collapse">
    <ul class="nav navbar-nav">
        <li>@Html.ActionLink("Home", "Index", "Home")</li>
        <li>@Html.ActionLink("About", "About", "Home")</li>
        <li>@Html.ActionLink("Contact", "Contact", "Home")</li>
        <li>@Html.ActionLink("Employee", "Index", "Employee")</li>
    </ul>
</div>
@Scripts.Render("~/bundles/jquery")
@Scripts.Render("~/bundles/bootstrap")
@Scripts.Render("~/bundles/angular")
@Scripts.Render("~/bundles/employee")
@RenderSection("scripts", required: false)

Now, add a new Angular Controller with scope. I am using just one script for Module, Service, and Controller. You can have it separate if working on a big project.

Module

//Define an angular module for our app
var app = angular.module('app', ['ngRoute', 'ui.grid', 'ui.grid.edit', 'ui.grid.pagination', 'ui.grid.autoResize', 'ui.grid.expandable', 'ui.grid.selection', 'ui.grid.pinning']).config(function($routeProvider, $locationProvider) {
    $locationProvider.hashPrefix('');
    $routeProvider.when('/', {
        templateUrl: 'Home',
        controller: 'homeController'
    }).when('/employee', {
        templateUrl: 'Employee',
        controller: 'employeeController'
    });
    //$locationProvider.html5Mode(true);
    //$locationProvider.html5Mode(true).hashPrefix('*');
});

Service

app.service('employeeService', function($http) {
    this.getEmployees = function() {
        var req = $http.get('api/EmployeeAPI/GetEmployee');
        return req;
    };
});

Controller

app.controller("employeeController", function($scope, $filter, employeeService, $window, $http, $log, $interval) {
    init();

    function init() {
        //$scope.employees = []; //Commented
        employeeService.getEmployees().then(function(result) {
            //$scope.employees = result.data; //Commented
            //Added for custom paging
            $scope.gridOptions.totalItems = result.data.length;
            $scope.totalPage = Math.ceil($scope.gridOptions.totalItems / $scope.pageSize);
            $scope.gridOptions.data = result.data;
            console.log($scope.Employees);
        }, function(error) {
            $window.alert('Oops! Something went wrong while fetching employee data.');
        });
        var paginationOptions = {
            pageNumber: 1,
            pageSize: 10,
        };
        $scope.currentPage = 1;
        $scope.pageSize = paginationOptions.pageSize;
        $scope.gridOptions = {
            enableRowSelection: true,
            selectionRowHeaderWidth: 35,
            enableRowHeaderSelection: true,
            //paginationPageSizes: [10, 20, 30, 40], //Commented
            // paginationPageSize: 10, //Commented
            paginationPageSizes: [$scope.pageSize, $scope.pageSize * 2, $scope.pageSize * 3],
            paginationPageSize: paginationOptions.pageSize,
            enableSorting: true,
            columnDefs: [{
                name: '',
                field: 'EmployeeID',
                enableColumnMenu: false,
                enableHiding: false,
                exporterSuppressExport: true,
                enableSorting: false,
                enableFiltering: false,
                visible: false
            }, {
                name: 'First Name',
                field: 'FirstName',
                headerCellClass: 'tablesorter-header-inner',
                enableFiltering: true,
                enableCellEdit: true,
            }, {
                name: 'Last Name',
                field: 'LastName',
                headerCellClass: 'tablesorter-header-inner',
                enableFiltering: true,
                enableCellEdit: true,
            }, {
                name: 'City',
                field: 'City',
                headerCellClass: 'tablesorter-header-inner',
                enableFiltering: true,
                enableCellEdit: true,
            }, {
                name: 'Region',
                field: 'Region',
                enableCellEdit: false,
                headerCellClass: 'tablesorter-header-inner',
                enableFiltering: true
            }, {
                name: 'Postal Code',
                field: 'PostalCode',
                enableCellEdit: false,
                headerCellClass: 'tablesorter-header-inner',
                enableFiltering: true
            }, {
                name: 'Country',
                field: 'Country',
                enableCellEdit: false,
                headerCellClass: 'tablesorter-header-inner',
                enableFiltering: true
            }, {
                name: 'Notes',
                field: 'Notes',
                enableCellEdit: false,
                headerCellClass: 'tablesorter-header-inner',
                enableFiltering: true
            }],
            //This code used for export grid data in csv file
            enableGridMenu: true,
            enableSelectAll: true,
            exporterMenuPdf: false,
            enableFiltering: true,
            exporterCsvFilename: 'EmployeeList_' + $filter('date')(new Date(), 'MM/dd/yyyy') + '.csv',
            exporterCsvLinkElement: angular.element(document.querySelectorAll(".custom-csv-link-location")),
            onRegisterApi: function(gridApi) {
                $scope.gridApi = gridApi;
                gridApi.selection.on.rowSelectionChanged($scope, function(row) {
                    var msg = 'row selected ' + row.isSelected;
                    $log.log(msg);
                    console.log(msg);
                    $window.alert(msg);
                });
                gridApi.selection.on.rowSelectionChangedBatch($scope, function(rows) {
                    var msg = 'rows changed ' + rows.length;
                    $log.log(msg);
                    $window.alert(msg);
                    console.log(msg);
                });
                gridApi.pagination.on.paginationChanged($scope, function(newPage, pageSize) {
                    debugger;
                    paginationOptions.pageNumber = newPage;
                    paginationOptions.pageSize = pageSize;
                    $scope.pageSize = pageSize;
                    $scope.currentPage = newPage;
                    $scope.totalPage = Math.ceil($scope.gridOptions.totalItems / $scope.pageSize);
                });
            },
            //end here
            //data for grid
            // data: 'employees'
        };
    }
});

Index

@ {
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
} < h2 > Employee < /h2> < div ng - controller = "employeeController" > < div ui - grid = "gridOptions"
ui - grid - pagination
ui - grid - selection
ui - grid - exporter
ui - grid - resize - columns
ui - grid - auto - resize
class = "grid" > < /div> < /div>

As everything is done, run the application.

In the given screenshot, you can see the page index and page size. Click "Next" to see the next page index.

Conclusion

In this article, we have seen how to implement paging with Angular UI-Grid with Web API and Entity Framework in MVC. If you have any questions or comments, drop me a line in the comments section.