Step-4: Add Entity Data Model.

Go to Solution Explorer > Right Click on Project name form Solution Explorer > Add > New item > Select ADO.net Entity Data Model under data > Enter model name > Add.
A popup window will come (Entity Data Model Wizard) > Select Generate from database > Next >
Chose your data connection > select your database > next > Select tables > enter Model Namespace > Finish.

Step-5: Add a new Controller.

Go to Solution Explorer > Right Click on Controllers folder form Solution Explorer > Add > Controller > Enter Controller name > Select Templete "empty MVC Controller"> Add.

Step-6: Add new action into your controller for show data in webgrid.

Here I have added "Index" Action into "Webgrid" Controller. Please write this following code

            public ActionResult Index()
            {
                //Here  MyDatabaseEntities  is our datacontext 
                List<CustomerInfo> allCust = new List<CustomerInfo>();
                using (MyDatabaseEntities dc = new MyDatabaseEntities())
                {
                    allCust = dc.CustomerInfoes.OrderBy(a => a.CustomerID).ToList();
                }
                return View(allCust);
            }
        

Step-7: Add view for the Action & design.

Right Click on Action Method (here right click on form action) > Add View... > Enter View Name > Select View Engine (Razor) > Check "Create a strong-typed view" > Select your model class > Add.
[N:B:Please Rebuild solution before add view.]
View

            @model IEnumerable<MVCSelectDeselectAllWebgrid.CustomerInfo>

            @{
                ViewBag.Title = "Index";
                WebGrid grid = new WebGrid(source: Model, canPage: false);
            }

            @* Here  I am going to add some css for better looks *@

            <style type="text/css">
                table.gridtable {
                 font-family: verdana,arial,sans-serif;
                 font-size:11px;
                 color:#333333;
                 border-width: 1px;
                 border-color: #666666;
                 border-collapse: collapse;
                }
                table.gridtable th {
                 border-width: 1px;
                 padding: 8px;
                 border-style: solid;
                 border-color: #666666;
                 background-color: #dedede;
                }
                table.gridtable td {
                 border-width: 1px;
                 padding: 8px;
                 border-style: solid;
                 border-color: #666666;
                 background-color: #ffffff;
                }
            </style>

            <h2>Customer Data</h2>

            @using (Html.BeginForm("Index","Webgrid", FormMethod.Post))
            {
                <div>
                    @grid.GetHtml(
                    tableStyle: "gridtable",
                    htmlAttributes: new { id = "checkableGrid" },
                    columns: grid.Columns
                        (
                    //Here I am going to add checkbox column
                            grid.Column(
                                format: @<text> <input type="checkbox" value="@item.CustomerID" name="ids" /> </text>,
                                header: "{checkall}"
                            ),
                            grid.Column("CustomerID", "Customer ID"),
                            grid.Column("CustomerName", "Customer Name"),
                            grid.Column("Address", "Address"),
                            grid.Column("City", "City"),
                            grid.Column("PostalCode", "Postal Code")
                        )
                    )
                </div>
                <div>
                    <input type="submit" value="Get Selected Record" />
                </div>
            }

            @if (ViewBag.Message != null)
            {
                <div>
                    @ViewBag.Message
                </div>
            }

            @* Here I am going to add some Jquery Code *@

            @section Scripts{
                <script>
                    $(document).ready(function () {
            
                        // 1st replace first column header text with checkbox

                        $("#checkableGrid th").each(function () {               
                            if ($.trim($(this).text().toString().toLowerCase()) === "{checkall}") {
                                $(this).text('');
                                $("<input/>", { type: "checkbox", id: "cbSelectAll", value: "" }).appendTo($(this));
                                $(this).append("<span>Select All</span>");
                            }
                        });

                        //2nd click event for header checkbox for select /deselect all
                        $("#cbSelectAll").live("click", function () {
                            var ischecked = this.checked;
                            $('#checkableGrid').find("input:checkbox").each(function () {
                                this.checked = ischecked;
                            });
                        });


                        //3rd click event for checkbox of each row
                        $("input[name='ids']").click(function () {
                            var totalRows = $("#checkableGrid td :checkbox").length;
                            var checked = $("#checkableGrid td :checkbox:checked").length;

                            if (checked == totalRows) {
                                $("#checkableGrid").find("input:checkbox").each(function () {
                                    this.checked = true;
                                });
                            }
                            else {
                                $("#cbSelectAll").removeAttr("checked");
                            }
                        });

                    });
                </script>
            }


        

Step-8: Add another action for POST data.

            [HttpPost]
            public ActionResult Index(string[] ids)
            {
                List<CustomerInfo> allCust = new List<CustomerInfo>();
                using (MyDatabaseEntities dc = new MyDatabaseEntities())
                {
                    allCust = dc.CustomerInfoes.OrderBy(a => a.CustomerID).ToList();
                }

                // In the real application you can ids 

                if (ids != null)
                {
                    ViewBag.Message = "You have selected following Customer ID(s):" + string.Join(", ", ids);
                }
                else
                {
                    ViewBag.Message = "No record selected";
                }

                return View(allCust);
            }
        

Step-9: Run Application.

• Part 1: How to display database data in webgrid in mvc 4
• Part 2: How to Dynamically set row background color in a webgrid depending on the content in MVC4.
• How to delete multiple webgrid rows by using Checkboxes in asp.net MVC 4 Application.
• Selecting / Deselecting all CheckBoxes inside a Webgrid in asp.net MVC4 Application
• How to implement Custom Paging in webgrid in MVC4 application
• How to implement Custom Paging and sorting in webgrid using jquery.