WCF: Step-by-Step Tutorial

<% @ServiceHost Language=C# Debug="true" Service="GeometryService" CodeBehind="~/App_Code/Service.cs" %>

<?xml version="1.0"?>
 
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
  <system.serviceModel>
    <services>
      <!-- Before deployment, you should remove the returnFaults behavior configuration to avoid disclosing information in exception messages -->
      <service name="GeometryService" behaviorConfiguration="GeometryServiceBehavior">
        <endpoint contract="IGeometryService" binding="wsHttpBinding"/>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="GeometryServiceBehavior" >
          <serviceDebug includeExceptionDetailInFaults="true" />
          <serviceMetadata httpGetEnabled="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
 
  <system.web>
    <compilation debug="true"/>
  </system.web>
 
 </configuration>

using System;
using System.ServiceModel;
using System.Runtime.Serialization;
 
// A WCF service consists of a contract (defined below as IMyService, DataContract1), 
// a class which implements that interface (see MyService), 
// and configuration entries that specify behaviors associated with 
// that implementation (see <system.serviceModel> in web.config)
 
[ServiceContract()]
public interface IGeometryService
{
 [OperationContract]
 int GetArea(Rectangle rect);
 [OperationContract]
 int GetPerimeter(int width, int height);
}
 
public class GeometryService : IGeometryService
{
 public int GetArea(Rectangle rect)
 {
  return rect.Area();
 }
 
 public int GetPerimeter(int width, int height)
 {
  Rectangle rect = new Rectangle(width, height);
  return rect.Perimeter();
 }
}
 
[DataContract]
public class Rectangle
{
 int width;
 int height;
 
 public Rectangle(int width, int height)
 {
  Width = width;
  Height = height;
 }
 
 [DataMember]
 public int Width
 {
  get { return width; }
  set { width = value < 0 ? 0 : value; }
 }
 
 [DataMember]
 public int Height
 {
  get { return height; }
  set { height = value < 0 ? 0 : value; }
 }
 
 public int Area()
 {
  return Height * Width;
 }
 
 public int Perimeter()
 {
  return 2 * (Height + Width);
 }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
 
namespace GeoWFCClient
{
 public partial class Form1 : Form
 {
  public Form1()
  {
   InitializeComponent();
  }
 
  private void calculateButton_Click(object sender, EventArgs e)
  {
   GeometryServiceClient gsclient = new GeometryServiceClient();
 
   /* The overloaded constructor of Rectangle is not present here */
   Rectangle rect = new Rectangle();
 
   rect.Width = Int32.Parse(widthTextBox.Text);
   rect.Height = Int32.Parse(heightTextBox.Text);
 
   areaTextBox.Text = gsclient.GetArea(rect).ToString();
   perimeterTextBox.Text = gsclient.GetPerimeter(rect.Width, rect.Height).ToString();
  }
 }
}

1. 

   Shen on August 16, 2009 at 9:39 pm

   This really helped me in getting started with WCF. Thanks for the simple and excellent article.

2. 

   gsp on September 3, 2009 at 2:57 am

   i am getting beloww error continuously:

   Could not find default endpoint element that references contract ‘IGeometryService’ in the ServiceModel client configuration section. This might be because no configuration file was found for your application, or because no endpoint element matching this contract could be found in the client element

   Please help who already soved this problem..

3. 

   Mekonnen on September 7, 2009 at 3:58 pm

   it is a nice tutorial to get started with WCF

4. 

   sushil on September 9, 2009 at 10:34 am

   Thks man it’s working nicely for me n finally i have start worked on wcf…

5. 

   Vishwajit on September 15, 2009 at 1:10 am

   Wow !! it worked … Thanks for sharing this simpler example to get start with WCF Services

6. 

   Naresh on September 18, 2009 at 2:55 am

   thanx man……….great way to start WCF………..

7. 

   Rajesh on September 21, 2009 at 7:37 am

   Nice Article….

8. 

   Amit on October 1, 2009 at 2:15 am

   Seems to different

9. 

   Krishan on October 1, 2009 at 5:24 am

   Thats good as for a short detail of WCF.But there should be some description o the terms used in WCF like ABCs etc.

10. 

    Santhosh on October 5, 2009 at 2:50 am

    That was really helpful. Simple and to the point.
    Good Work, Thank you….

11. 

    Rahul on October 9, 2009 at 8:34 am

    very good for bigners

12. 

    Srinath on October 14, 2009 at 6:07 am

    Really It is a very good article…. Thank you….

13. 

    Rahul Trivedi on October 15, 2009 at 12:47 am

    That was really good one…
    It will help me to get service working

    Thanks

14. 

    Syed Basheeruddin on October 20, 2009 at 2:50 am

    Thanks….for the nice article…..i’m able to get start with WCF

15. 

    t on October 20, 2009 at 3:46 am

    Thanks! very good tutorial!

    @gsp, the error you are getting is maybe because you haven’t published the main poject(the one not “client”), make sure to publish it and update the “ServiceReference” in Client project. Try building it again & it should work.

16. 

    Vijay Kolekar on October 21, 2009 at 4:49 am

    Hi Friend,

    thank you very much,these are very easy steps and i learnt in a hour.
    

17. 

    Phil on October 27, 2009 at 8:14 am

    Has anyone tried to create this example in VisualStudio 2008 using .Net 3.5? I can’t get past step 4. I get “System.InvalidOperationException: The type ‘GeometryService’, provided as the Service attribute value in the ServiceHost directive could not be found.”

    ServiceHost

    Web.config

    namespace
    namespace GeometryService

18. 

    Phil on October 27, 2009 at 8:16 am

    These got lost in my original post.

    ServiceHost
    <>

    Web.config
    <>

19. 

    Phil on October 27, 2009 at 8:17 am

    One more try without the

    ServiceHost
    ServiceHost Language=”C#” Debug=”true” Service=”GeometryService” CodeBehind=”Service.svc.cs”

    Web.config
    service name=”GeometryService” behaviorConfiguration=”GeometryServiceBehavior”

20. 

    Sumant Vakala on November 5, 2009 at 4:13 am

    Nice article. Its really helpful.

21. 

    pavani on November 10, 2009 at 3:41 am

    How to host WCFservice as windows service? can anyone help me out?

22. 

    Cezar on November 15, 2009 at 6:09 pm

    I would add
    gsClient.Close();
    at the end of the calculateButton_Click event

23. 

    ssmani on November 18, 2009 at 5:23 am

    i got this error from commandprompt

    svcutil.exe is not recogonized as an internal or external command

24. 

    Jitendra on November 18, 2009 at 7:11 am

    Thanks ,It’s very good article…..

25. 

    Foon on December 14, 2009 at 2:28 pm

    I’ve tried this example on VS2008 and like Phil says, I can’t get past Step 4

26. 

    vishy on December 17, 2009 at 4:50 am

    Excellant article for begginer to understand ..

27. 

    srinu on December 26, 2009 at 3:09 am

    its very nice..

28. 

    vidhyashok on January 2, 2010 at 12:10 am

    Very good article to start WCF
    Thank you

29. 

    Ponkarthik on January 6, 2010 at 12:39 am

    Hi it’s very nice article it’s working nicely in Localhost but if i published in Some sever with static IP It’s showing error That Meta data can not downloaded

    can u help me???

30. 

    Brijesh on January 13, 2010 at 12:14 am

    wow!!!,,this is really superb!! article i have read….

    Thanx A Ton……………:)

31. 

    Alagar on January 22, 2010 at 12:39 am

    It is Simply the best…

32. 

    Sunny on January 27, 2010 at 12:59 am

    Excellent Article. Short and Sweet

33. 

    Rizwan on January 29, 2010 at 7:12 am

    string myXMLfile = Server.MapPath(@”/CoffeProductList.xml”);
    List Prod = new List();
    ServiceClient ser = new ServiceClient();
    Prod = ser.ProductList(myXMLfile).ToList();
    foreach (Product p in Prod)
    {
    test productUserControl = (test)LoadControl(”Web.ascx”);
    productUserControl .ProdName = p.ProdName;
    productUserControl .Prodvalue = p.Prodvalue;
    productUserControl .ProdType = p.ProdType;
    tUserControl.ClickAddtoCart += new Shop.onClick(roductUserControl_ClickAddtoCart);
    Panel.Controls.Add(productUserControl );

    string myXMLfile = Server.MapPath(@”/ProductList.xml”);
    DataSet MyProducts = new DataSet();
    MyProducts.ReadXml(myXMLfile);
    DataTable MyTable = MyProducts.Tables[0];
    int intRC;
    intRC = MyProducts.Tables[0].Rows.Count;
    //LblProdCost.Text = Convert.ToString(MyTable.Rows.Count);
    foreach (DataRow dr in MyTable.Rows)
    {

    Web ProductUserControl = (Web)LoadControl(”Web.ascx”);
    ProductUserControl .ProdName=dr["Name"].ToString();
    ProductUserControl .Prodvalue = dr["Type"].ToString();
    ProductUserControl .ProdType = dr["value"].ToString();
    Panel.Controls.Add(ProductUserControl );

34. 

    nasri on February 2, 2010 at 4:19 am

    , very nice, this was my first WCF service .
    thank you very much

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