How to delete multiple webgrid rows by using Checkboxes in asp.net MVC 4 Application

Step - 1 : Create New Project.

Go to File > New > Project > Select asp.net MVC4 web application > Entry Application Name > Click OK > Select Internet Application > Select view engine Razor > OK

Step-2: Add a Database.

Go to Solution Explorer > Right Click on App_Data folder > Add > New item > Select SQL Server Database Under Data > Enter Database name > Add.

Step-3: Create table for fetch data.

Open Database > Right Click on Table > Add New Table > Add Columns > Save > Enter table name > Ok. 

In this example, I have used one tables as below 

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 "List" Action into "Customer" Controller. Please write this following code 

             public ActionResult List()
            {
                List<CustomerInfo> allCust = new List<CustomerInfo>();
            
                // Here MyDatabaseEntities is our Data Context
                using (MyDatabaseEntities dc = new MyDatabaseEntities())
                {
                    allCust = dc.CustomerInfoes.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.] 
Complete View 

            @model IEnumerable<MVCMultipleDelete.CustomerInfo>
            @{
                ViewBag.Title = "List";
                var grid = new WebGrid(source: Model, rowsPerPage: 10);
            }
 
            @* Here I will add some css for look webgrid good *@
            <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>
 
 
            <div style="font-weight:bold;">
                Customer List
            </div>
 
            @using (Html.BeginForm("DeleteSelected","Customer", FormMethod.Post))
            {
                @grid.GetHtml(
                tableStyle:"gridtable",
                columns:
                    grid.Columns(
        
                        @*Here I Will Add Checkbox Column*@
                        grid.Column(format:@<text><input type="checkbox" name="ids" value="@item.CustomerID" /></text>, header:"Select"),
                        grid.Column("CustomerID","Customer ID"),
                        grid.Column("CustomerName", "Customer Name"),
                        grid.Column("Address","Address"),
                        grid.Column("City","City"),
                        grid.Column("PostalCode", "Postal Code")
                    )
                )
 
                <input type="submit" value="Delete Selected" />
            }
 
        

Step-8: Add another action into your controller for Delete multiple rows at once.

Here I have added "DeleteSelected" Action into "Customer" Controller. Please write this following code 

            public ActionResult DeleteSelected(string[] ids)
            {
                //Delete Selected 
                int[] id = null;
                if (ids != null)
                {
                    id = new int[ids.Length];
                    int j = 0;
                    foreach (string i in ids)
                    {
                        int.TryParse(i, out id[j++]);
                    }
                }
 
                if (id != null && id.Length > 0)
                {
                    List<CustomerInfo> allSelected = new List<CustomerInfo>();
                    using (MyDatabaseEntities dc = new MyDatabaseEntities())
                    {
                        allSelected = dc.CustomerInfoes.Where(a => id.Contains(a.CustomerID)).ToList();
                        foreach (var i in allSelected)
                        {
                            dc.CustomerInfoes.Remove(i);
                        }
                        dc.SaveChanges();
                    }
                }
                return RedirectToAction("List");
            }
        

Step-9: Run Application.