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Service Contracts with Single Unique Endpoint Hosted on Web App


Service Contracts with Single Unique Endpoint Hosted on Web App

Today, in this article let's see the clear implementation of when a case arises to use several service contracts and then implement the developed service in well formed unique way. So firstly, let get ready and fire up visual studio 2010. File->New Project-> WCF Service Application

So, initially let's start creating simple service contract which is named as IService1

So the Complete Code of IService1 looks like this:

using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Runtime.Serialization;
 using System.ServiceModel;
 using System.ServiceModel.Web;
 using System.Text;
 namespace MultipleServiceContracts
{
    // 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 : Interface3, Interface2, Interface1, Interface4
    {
        [OperationContract] double Add(double a, double b);
    }
}

Let's start creating other service contracts as well. The Complete Code of Interface1 looks like this:

using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.ServiceModel;
 using System.Text;
 namespace MultipleServiceContracts
{
    [ServiceContract]
    public interface Interface1
    {
        [OperationContract]
        double Sub(double a, double b);
    }
}

The Complete Code of Interface2 looks like this:

using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.ServiceModel;
 using System.Text;
 namespace MultipleServiceContracts
{
    [ServiceContract]
    public interface Interface2
    {
        [OperationContract]
        double Mul(double a, double b);
    }
}

The Complete Code of Interface3 looks like this:

using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.ServiceModel;
 using System.Text;
 namespace MultipleServiceContracts
{
    [ServiceContract]
    public interface Interface3
    {
        [OperationContract]
        double div(double a, double b);
    }
}

The Complete Code of Interface4 looks like this:

using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.ServiceModel;
 using System.Text;
 namespace MultipleServiceContracts
{
    [ServiceContract]
    public interface Interface4
    {
        [OperationContract]
        double Mod(double a, double b);
    }
}

Now, it's time for us to get ready to create new service. The Complete Code of Service1.svc looks like this:

using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Runtime.Serialization;
 using System.ServiceModel;
 using System.ServiceModel.Web;
 using System.Text;
 namespace MultipleServiceContracts
{
    // 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 double Add(double a, double b)
        {
            return a + b;
        }
        public double Sub(double a, double b)
        {
            return a - b;
        }
        public double Mul(double a, double b)
        {
            return a * b;
        }
        public double div(double a, double b)
        {
            return a / b;
        }
        public double Mod(double a, double b)
        {
            return a % b;
        }
    }
}

The Complete Code of Web.Config looks like this:

<?xml version="1.0"?>
 <configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.0" />
   </system.web>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="Application">
           <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="true"/>
           <!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="false"/>
         </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <service name="MultipleServiceContracts.Service1" behaviorConfiguration="Application">
         <endpoint address="/Simple" binding="basicHttpBinding" contract="MultipleServiceContracts.IService1"></endpoint>
         <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"></endpoint>
         <host>
          <baseAddresses>
            <add baseAddress="http://localhost:50325/Service1.svc"/>
           </baseAddresses>
        </host>
      </service>
    </services>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
   </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
   </system.webServer>
</configuration>





Now we are done with WCF Application. Now let's go and add new web project. So the Complete Code of WebForm1.aspx looks like this:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="ServiceContracts.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">
    <title></title>
    <style type="text/css">
        .div
        {
            background-color: Silver;
            border-color: Red;
            border-style: solid;
        }
    </style>
 </head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <ContentTemplate>
            <div class="div">
                <center>
                    <table>
                        <tr>
                            <td>
                                <asp:Label ID="Label1" runat="server" Font-Bold="true" Font-Italic="true" Text="Please Enter Second Number
"
                                    Font-Size="Large"></asp:Label>
                            </td>
                            <td>
                                <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <asp:Label ID="Label2" runat="server" Font-Bold="true" Font-Italic="true" Text="Please Enter Second Number
"
                                    Font-Size="Large"></asp:Label>
                            </td>
                            <td>
                                <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
                            </td>
                        </tr>
                        <tr>
                            <td>
                            </td>
                            <td>
                                <asp:Button ID="Button1" runat="server" Text="Addition" Width="117px" OnClick="Button1_Click" />
                            </td>
                        </tr>
                        <tr>
                            <td>
                            </td>
                            <td>
                                <asp:Button ID="Button2" runat="server" Text="Substraction" Width="117px" OnClick="Button2_Click" />
                            </td>
                        </tr>
                        <tr>
                            <td>
                            </td>
                            <td>
                                <asp:Button ID="Button3" runat="server" Text="Multiplication" Width="117px" OnClick="Button3_Click" />
                            </td>
                        </tr>
                        <tr>
                            <td>
                            </td>
                            <td>
                                <asp:Button ID="Button4" runat="server" Text="Division" Width="117px" OnClick="Button4_Click" />
                            </td>
                        </tr>
                        <tr>
                            <td>
                            </td>
                            <td>
                                <asp:Button ID="Button5" runat="server" Text="Modulos" Width="117px" OnClick="Button5_Click" />
                            </td>
                        </tr>
                    </table>
                    <table>
                        <tr>
                            <td>
                                <asp:Label ID="Label3" runat="server" Visible="false" ForeColor="Brown" Font-Size="Larger"></asp:Label>
                            </td>
                        </tr>
                    </table>
                </center>
            </div>
        </ContentTemplate>
    </asp:UpdatePanel>
    </form>
 </body>
</html>

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 ServiceContracts.ServiceReference1;
 namespace ServiceContracts
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            TextBox1.Focus();
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            try
            {
                if (TextBox1.Text == "" || TextBox2.Text == "")
                {
                    Label3.Text = "<center><b><i> Please Enter Some Values";
                    Label3.Visible = true;
                }
                else
                {
                    var objClient = new Service1Client();
                    Label3.Text = "The Addition Two Numbers is: &nbsp <b>" + (objClient.Add(Convert.ToDouble(TextBox2.Text), Convert.ToDouble(TextBox1.Text))).ToString();
                    Label3.Visible = true;
                    TextBox1.Text = "";
                    TextBox2.Text = "";
                }
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
            }
        }
        protected void Button2_Click(object sender, EventArgs e)
        {
            try
            {
                if (TextBox1.Text == "" || TextBox2.Text == "")
                {
                    Label3.Text = "<center><b><i>Please Enter Some Values";
                    Label3.Visible = true;
                }
                else
                {
                    var objClient = new Service1Client();
                    Label3.Text = "The Substraction of Two Numbers is: &nbsp <b>" + objClient.Sub(Convert.ToDouble(TextBox1.Text), Convert.ToDouble(TextBox2.Text)).ToString();
                    Label3.Visible = true;
                    TextBox1.Text = "";
                    TextBox2.Text = "";
                }
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
            }
        }
        protected void Button3_Click(object sender, EventArgs e)
        {
            try
            {
                if (TextBox1.Text == "" || TextBox2.Text == "")
                {
                    Label3.Text = "<center><b><i> Please Enter Some Values ";
                    Label3.Visible = true;
                }
                else
                {
                    var objClient = new Service1Client();
                    Label3.Text = "The Multiplication of Two Numbers is: &nbsp <b>" + objClient.Mul(Convert.ToDouble(TextBox1.Text), Convert.ToDouble(TextBox2.Text)).ToString();
                    Label3.Visible = true;
                    TextBox1.Text = "";
                    TextBox2.Text = "";
                }
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
            }
        }
        protected void Button4_Click(object sender, EventArgs e)
        {
            try
            {
                if (TextBox1.Text == "" || TextBox2.Text == "")
                {
                    Label3.Text = "<center><b><i>Please Enter Some Values";
                    Label3.Visible = true;
                }
                else
                {
                    var objClient = new Service1Client();
                    Label3.Text = "The Division of Two Numbers is: &nbsp <b>" + objClient.div(Convert.ToDouble(TextBox1.Text), Convert.ToDouble(TextBox2.Text)).ToString();
                    Label3.Visible = true;
                    TextBox1.Text = "";
                    TextBox2.Text = "";
                }
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
            }
        }
        protected void Button5_Click(object sender, EventArgs e)
        {
            try
            {
                if (TextBox1.Text == "" || TextBox2.Text == "")
                {
                    Label3.Text = "";
                    Label3.Visible = true;
                }
                else
                {
                    var objClient = new Service1Client();
                    Label3.Text = "The Modulos of Two Numbers is: &nbsp <b>" + objClient.Mod(Convert.ToDouble(TextBox1.Text), Convert.ToDouble(TextBox2.Text)).ToString();
                    Label3.Visible = true;
                    TextBox1.Text = "";
                    TextBox2.Text = "";
                }
            }
            catch (Exception ex)
            {
                ex.Message.ToString();
            }
        }
    }
}

The Output of the Application looks like this:

ServiceContractOne.png

The Addition Operation Output looks like this:

ServiceContractThree.png

The Invalid Information Passed Output looks like this:

ServiceContractTwo.png


I hope this article is useful for you.
 


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