Select Data With Typed Dataset (XSD) Via WCF

Introduction

This article demonstrates an interesting and very useful concept in typed datasets.

Question: What is select data with typed dataset (XSD) via WCF?

In simple terms "It enables selection of data from a DB using a typed dataset and a WCF Service".

Step 1:
Create a new web application

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Step 2: Create a new WCF service application

Output2.jpg

Step 3: Adding a new typed dataset

Output2.jpg

Output3.png

Output4.jpg

Output5.png

Step 4: The complete code of IService1.cs is as in the following:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.Serialization;

using System.ServiceModel;

using System.ServiceModel.Web;

using System.Text;

namespace WCFService

{

    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService1" in both code and config file together.

    [ServiceContract]

    public interface IService1

    {

        [OperationContract]

        EmployeeDS.tblEmployeeDataTable GetAllEmployees();

    }

}

Step 5: The complete code of Service1.svc.cs is as in the following:
 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.Serialization;

using System.ServiceModel;

using System.ServiceModel.Web;

using System.Text;

namespace WCFService

{

    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "Service1" in code, svc and config file together.

    public class Service1 : IService1

    {

        public EmployeeDS.tblEmployeeDataTable GetAllEmployees()

        {

            EmployeeDS.tblEmployeeDataTable objEmployeeTable = objAdapter.GetData();

            return objEmployeeTable;

        }

        #region Instance Membersreadonly EmployeeDSTableAdapters.tblEmployeeTableAdapter objAdapter = new EmployeeDSTableAdapters.tblEmployeeTableAdapter();

        #endregion

    }

}

Step 6: Adding a service reference

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Step 7: The complete code of WebForm1.aspx is as in the following:
 

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="SelectData_XSD_WCFService.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 XSD via WCF" 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"

                            AutoGenerateColumns="False">

                            <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" />

                            <Columns>

                                <asp:BoundField DataField="EmpId" HeaderText="Id" />

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

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

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

                            </Columns>

                        </asp:GridView>

                    </td>

                </tr>

            </table>

        </div>

    </center>

    </form>

</body>

</html>

Step 8: The complete code of WebForm1.aspx.cs is as in the following:
 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using SelectData_XSD_WCFService.ServiceReference1;namespace SelectData_XSD_WCFService

{

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

    {

        protected void Page_Load(object sender, EventArgs e)

        {

        }

        protected void Button1_Click(object sender, EventArgs e)

        {

            GridView1.DataSource = objClient.GetAllEmployees();

            GridView1.DataBind();

        }

        #region Instance MembersService1Client objClient = new Service1Client();

        #endregion

    }

}

Step 9: The output of the application is as in the following:


Output7.png


Step 10: The selected data output of the application is as in the following:

Output8.png


I hope this article was useful for you.