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

Step 2: Create a new WCF service application

Step 3: Adding a new typed dataset

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

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">

.grid

{

margin-top: 50px;

}

</style>

</head>

<body>

<div>

<table>

<tr>

<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>

<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>

<asp:GridView ID="GridView1" runat="server" CssClass="grid" BackColor="LightGoldenrodYellow"

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

AutoGenerateColumns="False">

<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:

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

I hope this article was useful for you.