Select and Insert Data With Reverse Engineering Via EDM Framework

Introduction

Today, in this article let's play around with one of the interesting and most useful concepts in EDM Framework.

What is select data with reverse engineering via the EDM framework?

In simple terms "It provides flexibility to pull out the data using a reverse engineering mechanism via EDM framework".

Step 1. Create a new web application.

Step 2. Set up a new EDM framework with reverse engineering for the project.

Step 3. The complete code of WebForm1.aspx looks like this.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="ReverseEnggApp.WebForm1" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <style type="text/css"> .grid { margin-top: 50px; } </style> <title></title> </head> <body> <form id="form1" runat="server"> <center> <div> <table> <tr> <td colspan="2" align="center"> <asp:Label ID="Label1" runat="server" Text="Select Data with Reverse Engg. via EDM Framework" Font-Bold="true" Font-Size="Large" Font-Names="Verdana" ForeColor="Maroon"></asp:Label> </td> </tr> <tr> <td colspan="2" align="center"> <asp:Button ID="Button1" runat="server" Text="Select Data" Font-Names="Verdana" Width="213px" BackColor="Orange" Font-Bold="True" OnClick="Button1_Click" /> </td> </tr> <tr> <td colspan="2" align="center"> <asp:GridView ID="GridView1" runat="server" CssClass="grid" BackColor="LightGoldenrodYellow" BorderColor="Tan" BorderWidth="1px" CellPadding="2" ForeColor="Black" GridLines="None"> <AlternatingRowStyle BackColor="PaleGoldenrod" /> <FooterStyle BackColor="Tan" /> <HeaderStyle BackColor="Tan" Font-Bold="True" /> <PagerStyle BackColor="PaleGoldenrod" ForeColor="DarkSlateBlue" HorizontalAlign="Center" /> <SelectedRowStyle BackColor="DarkSlateBlue" ForeColor="GhostWhite" /> <SortedAscendingCellStyle BackColor="#FAFAE7" /> <SortedAscendingHeaderStyle BackColor="#DAC09E" /> <SortedDescendingCellStyle BackColor="#E1DB9C" /> <SortedDescendingHeaderStyle BackColor="#C2A47B" /> </asp:GridView> </td> </tr> <tr> <td colspan="2" align="center"> <asp:Label ID="Label3" runat="server" Font-Bold="true" Font-Size="Medium" Font-Names="Verdana"></asp:Label> </td> </tr> </table> </div> </center> </form> </body> </html>

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; using ReverseEnggApp.Models; namespace ReverseEnggApp { public partial class WebForm1 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { var query = (from r in objContext.tblEmployees select new { EmpId = r.EmpId, FirstName = r.FirstName, LastName = r.LastName, Age = r.Age }).ToList(); GridView1.DataSource = query; GridView1.DataBind(); } #region Instance Members CompanyContext objContext = new CompanyContext(); #endregion } }

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

Step 6. The selected data output of the application looks like this.

Selected Data

Let's play around with one of the interesting and most useful concepts in the EDM Framework.

What is insert data with reverse engineering via the EDM framework?

In simple terms "It provides flexibility to insert the data using a reverse engineering mechanism via EDM framework".

Step 1. Create a new web application.

Application

Step 2. Set up a new EDM framework with reverse engineering for the project:

Reverse engineering