WCF 4.5 New Feature Channel Factory Caching

Introduction
 
Today, in this article let's play around with one of the interesting and most useful concepts in WCF 4.5.
 
Question: What is channel factory caching?
 
In simple terms "It enables caching of channel factories when you consume the service on a client. A new CacheSetting property has been introduced in WCF 4.5 which provides flexibility to set it up".
 
Step 1: Create a new WCF 4.5 project.


 
Step 2: The complete code of IService1.cs 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 ChannelFactoryCachingApp
 {
     // 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]
         double Add(double a, double b);
         [OperationContract]
         double Sub(double a, double b);
         [OperationContract]
         double Mul(double a, double b);
         [OperationContract]
         double Div(double a, double b);
     }
 }
 
Step 3: The complete code of Service1.svc.cs 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;
 using WcfService1;
 namespace ChannelFactoryCachingApp
 {
     // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "Service1" in code, svc and config file together.
     // NOTE: In order to launch WCF Test Client for testing this service, please select Service1.svc or Service1.svc.cs at the Solution Explorer and start debugging.
     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;
         }
     }
 }
 
Step 4: The complete code of web.config file looks like this:
 
 <?xml version="1.0"?>
 <configuration>
   <appSettings>
     <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
   </appSettings>
   <system.web>
     <compilation debug="true" targetFramework="4.5" />
     <httpRuntime targetFramework="4.5"/>
   </system.web>
   <system.serviceModel>
     <behaviors>
       <serviceBehaviors>
         <behavior>
           <!-- To avoid disclosing metadata information, set the values below to false before deployment -->
           <serviceMetadata httpGetEnabled="true" httpsGetEnabled="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>
     <protocolMapping>
       <add binding="basicHttpsBinding" scheme="https" />
     </protocolMapping>
     <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
   </system.serviceModel>
   <system.webServer>
     <modules runAllManagedModulesForAllRequests="true"/>
     <!--To browse web app root directory during debugging, set the value below to true.Set to false before deployment to avoid disclosing web app folder information.-->
     <directoryBrowse enabled="true"/>
   </system.webServer>
 </configuration>

Step 5: Create an "ASP.NET Web Forms Application" project and add the service reference of the new WCF project; see:


 
Step 6: The complete code of WebForm1.aspx looks like this:
 
 <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="ChannelCachingApp.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>
             <table>
                 <tr>
                     <td colspan="2">
                         <asp:Label ID="Label1" runat="server" Text="Arthmetic Operations - WCF 4.5 Channel Factory and Caching"
                             Font-Bold="true" Font-Size="Large" Font-Names="Verdana" ForeColor="Maroon"></asp:Label>
                     </td>
                 </tr>
                 <tr>
                     <td>
                         <asp:Label ID="Label3" runat="server" Text="Please Enter First Number" Font-Size="Large"
                             Font-Names="Verdana" Font-Italic="true"></asp:Label>
                     </td>
                     <td>
                         <asp:TextBox ID="TextBox2" runat="server" Width="120px"></asp:TextBox>
                     </td>
                 </tr>
                 <tr>
                     <td>
                         <asp:Label ID="Label2" runat="server" Text="Please Enter Second Number" Font-Size="Large"
                             Font-Names="Verdana" Font-Italic="true"></asp:Label>
                     </td>
                     <td>
                         <asp:TextBox ID="TextBox1" runat="server" Width="120px"></asp:TextBox>
                     </td>
                 </tr>
                 <tr>
                     <td colspan="2" style="text-align: center">
                         <asp:Button ID="Button1" runat="server" Text="Addition" Font-Names="Verdana" Width="213px"
                             BackColor="Orange" Font-Bold="True" OnClick="Button1_Click" />
                     </td>
                 </tr>
                 <tr>
                     <td colspan="2" style="text-align: center">
                         <asp:Button ID="Button2" runat="server" Text="Substraction" Font-Names="Verdana"
                             Width="213px" BackColor="Orange" Font-Bold="True" OnClick="Button2_Click" />
                     </td>
                 </tr>
                 <tr>
                     <td colspan="2" style="text-align: center">
                         <asp:Button ID="Button3" runat="server" Text="Multiplication" Font-Names="Verdana"
                             Width="213px" BackColor="Orange" Font-Bold="True" OnClick="Button3_Click" />
                     </td>
                 </tr>
                 <tr>
                     <td colspan="2" style="text-align: center">
                         <asp:Button ID="Button4" runat="server" Text="Division" Font-Names="Verdana" Width="213px"
                             BackColor="Orange" Font-Bold="True" OnClick="Button4_Click" />
                     </td>
                 </tr>
                 <tr>
                     <td colspan="2" style="top: 50px; text-align: center">
                         <asp:Label ID="Label5" runat="server" Font-Bold="true" Font-Names="Verdana" ForeColor="Maroon"></asp:Label>
                     </td>
                 </tr>
             </table>
         </div>
     </center>
     </form>
 </body>
 </html>
 
Step 7: The complete code of WebForm1.aspx.cs looks like this:
 
 using ChannelCachingApp.ServiceReference1;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.ServiceModel;
 using System.Web;
 using System.Web.UI;
 using System.Web.UI.WebControls;
 namespace ChannelCachingApp
 {
     public partial class WebForm1 : System.Web.UI.Page
     {
         protected void Page_Load(object sender, EventArgs e){}
         protected void Button1_Click(object sender, EventArgs e)
         {
             if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text))
             {
                 Label5.Text = "Please Enter Some Values";
                 Label5.ForeColor = System.Drawing.Color.Red;
             }
             else
             {
                 System.ServiceModel.ClientBase<IService1>.CacheSetting = CacheSetting.Default;
                 Label5.Text = "The Addition of " + TextBox1.Text + " and " + TextBox2.Text + " is " +
                     objClient.Add(double.Parse(TextBox1.Text), double.Parse(TextBox2.Text));
                 Label5.ForeColor = System.Drawing.Color.Green;
                 TextBox1.Text = string.Empty;
                 TextBox2.Text = string.Empty;
             }
         }
         protected void Button2_Click(object sender, EventArgs e)
         {
             if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text))
             {
                 Label5.Text = "Please Enter Some Values";
                 Label5.ForeColor = System.Drawing.Color.Red;
             }
             else
             {
                 System.ServiceModel.ClientBase<IService1>.CacheSetting = CacheSetting.Default;
                 Label5.Text = "The Substraction of " + TextBox1.Text + " and " + TextBox2.Text + " is " +
                     objClient.Sub(double.Parse(TextBox1.Text), double.Parse(TextBox2.Text));
                 Label5.ForeColor = System.Drawing.Color.Green;
                 TextBox1.Text = string.Empty;
                 TextBox2.Text = string.Empty;
             }
         }
         protected void Button3_Click(object sender, EventArgs e)
         {
             if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text))
             {
                 Label5.Text = "Please Enter Some Values";
                 Label5.ForeColor = System.Drawing.Color.Red;
             }
             else
             {
                 System.ServiceModel.ClientBase<IService1>.CacheSetting = CacheSetting.AlwaysOff;
                 Label5.Text = "The Multiplication of " + TextBox1.Text + " and " + TextBox2.Text + " is " +
                     objClient.Mul(double.Parse(TextBox1.Text), double.Parse(TextBox2.Text));
                 Label5.ForeColor = System.Drawing.Color.Green;
                 TextBox1.Text = string.Empty;
                 TextBox2.Text = string.Empty;
             }
         }
         protected void Button4_Click(object sender, EventArgs e)
         {
             if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text))
             {
                 Label5.Text = "Please Enter Some Values";
                 Label5.ForeColor = System.Drawing.Color.Red;
             }
             else
             {
                 System.ServiceModel.ClientBase<IService1>.CacheSetting = CacheSetting.AlwaysOn;
                 Label5.Text = "The Division of " + TextBox1.Text + " and " + TextBox2.Text + " is " +
                     objClient.Div(double.Parse(TextBox1.Text), double.Parse(TextBox2.Text));
                 Label5.ForeColor = System.Drawing.Color.Green;
                 TextBox1.Text = string.Empty;TextBox2.Text = string.Empty;
             }
         }
         #region Instance VariablesService1Client objClient = new Service1Client();
         #endregion
     }
 }
 
Step 8: The output of application looks like this:


 
Step 9: The addition operation output of the application looks like this:


 
I hope this article is useful for you. I look forward for your comments and feedback. Thanks Vijay Prativadi