Enhanced Delete Support in .NET 4.5

Posted by Vijay Prativadi Articles | .NET 4.5 October 08, 2012
Today, in this article let’s play around with one of the interesting and most useful concepts in .NET 4.5.
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Today, in this article let's play around with one of the interesting and most useful concepts in .NET 4.5.

Question: What is enhanced delete support?

In simple terms "It provides enhanced deleting support with various methods invocation as per the usage".

Step 1: Create a new "ASP.Net Web Forms Application", as in:

Step 2: Create an Entity Data Model Framework and set it up with an appropriate database.

Step 3: The complete code of webform1.aspx looks like this:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="EnhancedDeleteSupportApp.WebForm1" %>

<!DOCTYPE html>

<html xmlns="">

<head id="Head1" runat="server">




    <form id="form1" runat="server">



            <asp:GridView ID="GridView1" runat="server" BackColor="LightGoldenrodYellow" ItemType="EnhancedDeleteSupportApp.Employee"

                BorderColor="Tan" BorderWidth="1px" CellPadding="2" ForeColor="Black" GridLines="None"

                AutoGenerateColumns="false" SelectMethod="GetData" UpdateMethod="UpdateData"

                AutoGenerateEditButton="true" AutoGenerateDeleteButton="true" DeleteMethod="DeleteData">

                <AlternatingRowStyle BackColor="PaleGoldenrod"></AlternatingRowStyle>

                <FooterStyle BackColor="Tan"></FooterStyle>

                <HeaderStyle BackColor="Tan" Font-Bold="True"></HeaderStyle>

                <PagerStyle HorizontalAlign="Center" BackColor="PaleGoldenrod" ForeColor="DarkSlateBlue">


                <SelectedRowStyle BackColor="DarkSlateBlue" ForeColor="GhostWhite"></SelectedRowStyle>

                <SortedAscendingCellStyle BackColor="#FAFAE7"></SortedAscendingCellStyle>

                <SortedAscendingHeaderStyle BackColor="#DAC09E"></SortedAscendingHeaderStyle>

                <SortedDescendingCellStyle BackColor="#E1DB9C"></SortedDescendingCellStyle>

                <SortedDescendingHeaderStyle BackColor="#C2A47B"></SortedDescendingHeaderStyle>


                    <asp:BoundField DataField="Id" HeaderText="ID" ReadOnly="true" />

                    <asp:BoundField DataField="FirstName" HeaderText="FirstName" SortExpression="FirstName" />

                    <asp:BoundField DataField="LastName" HeaderText="LastName" SortExpression="LastName" />

                    <asp:BoundField DataField="Age" HeaderText="Age" SortExpression="Age" />








Step 4: The complete code of webform1.aspx.cs looks like this:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace EnhancedDeleteSupportApp


    public partial class WebForm1 : System.Web.UI.Page


        protected void Page_Load(object sender, EventArgs e)



        public IQueryable GetData()


            return objEntities.Employee;


        public void UpdateData(Employee employee)


            if (ModelState.IsValid)


                objEntities.Entry(employee).State = System.Data.EntityState.Modified;




        public void DeleteData(int id)


            Employee obj_Employee = objEntities.Employee.Find(id);




        #region Instance VariablesCompanyEntities objEntities = new CompanyEntities();#endregion



Step 5: The output of the application looks like this:

Step 6: The data deleted output of the application looks like this:

Step 7: The deleted data showing in database output of the application looks like this:


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