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Select Data Using Model Binders in .NET 4.5

By Vijay Prativadi on October 07, 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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Introduction

Today, in this article let's play around with one of the interesting and most useful concepts in .NET 4.5.

Question: What are model binders?

In simple terms "It is a data binding system which is used to perform some common operations based on the data retrieved from a model class with strongly typed invocations".

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

New-project-in-asp.net.jpg

Step 2: The complete code of webform1.aspx looks like this:

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

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

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

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

    <center>

        <div>

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

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

                AutoGenerateColumns="false" SelectMethod="GetData">

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

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

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

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

                </PagerStyle>

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

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

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

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

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

                <Columns>

                    <asp:TemplateField HeaderText="Id">

                        <ItemTemplate>

                            <asp:Label ID="lblId" runat="server" Text='<%# Item.Id %>'></asp:Label></ItemTemplate>

                    </asp:TemplateField>

                    <asp:TemplateField HeaderText="First Name">

                        <ItemTemplate>

                            <asp:Label ID="lblFirstName" runat="server" Text='<%# Item.FirstName %>'></asp:Label></ItemTemplate>

                    </asp:TemplateField>

                    <asp:TemplateField HeaderText="Last Name">

                        <ItemTemplate>

                            <asp:Label ID="lblLastName" runat="server" Text='<%# Item.LastName %>'></asp:Label></ItemTemplate>

                    </asp:TemplateField>

                    <asp:TemplateField HeaderText="Age">

                        <ItemTemplate>

                            <asp:Label ID="lblAge" runat="server" Text='<%# Item.Age %>'></asp:Label></ItemTemplate>

                    </asp:TemplateField>

                </Columns>

            </asp:GridView>

        </div>

    </center>

    </form>

</body>

</html>

Step 3: 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 ModelBindersSelectApp

{

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

    {

        protected void Page_Load(object sender, EventArgs e)

        {

        }

        public IQueryable GetData()

        {return objEntities.Employee;

        }

        #region Instance VariablesCompanyEntities objEntities = new CompanyEntities();

        #endregion

    }

}

Step 4: The output of the application looks like this:


Output-of-the-application-in-asp.net.jpg

Vijay Prativadi

Hey Everyone, It's Vijay. I am SDE mostly up on Microsoft Technologies. If you are thinking to know what I do mostly when at work. I get a chance to work upon few Microsoft technologies. All the way along my core tech... Read more

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