print barcode labels vb.net Sessions and Instancing in Visual C#.NET

Generator Data Matrix in Visual C#.NET Sessions and Instancing

10
Generate Data Matrix ECC200 In Visual C#.NET
Using Barcode maker for .NET framework Control to generate, create Data Matrix 2d barcode image in .NET framework applications.
www.OnBarcode.com
Data Matrix 2d Barcode Recognizer In Visual C#
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Sessions and Instancing
Bar Code Encoder In C#.NET
Using Barcode creation for VS .NET Control to generate, create barcode image in VS .NET applications.
www.OnBarcode.com
Scan Bar Code In Visual C#.NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
The class is already decorated with the IServiceBehavior interface. This requires the three methods in the class to be defined. To add the InstanceContextProvider, the only method that must have code is ApplyDispatchBehavior. In this method, every endpoint dispatcher on every channel will set the InstanceContextProvider property to a new instance of the DemoContextProvider class. 14. Add the following code to the ApplyDispatchBehavior method:
Painting Data Matrix ECC200 In .NET Framework
Using Barcode drawer for ASP.NET Control to generate, create Data Matrix 2d barcode image in ASP.NET applications.
www.OnBarcode.com
Data Matrix ECC200 Printer In Visual Studio .NET
Using Barcode generator for VS .NET Control to generate, create DataMatrix image in Visual Studio .NET applications.
www.OnBarcode.com
' VB Dim extension As New DemoContextProvider() Dim dispatcherBase As ChannelDispatcherBase For Each dispatcherBase In serviceHostBase.ChannelDispatchers Dim dispatcher As ChannelDispatcher = TryCast(dispatcherBase, _ ChannelDispatcher) Dim _endpointDispatcher As EndpointDispatcher For Each _endpointDispatcher in dispatcher.Endpoints _endpointDispatcher.DispatchRuntime.InstanceContextProvider = _ extension Next Next // C# DemoContextProvider extension = new DemoContextProvider(); foreach (ChannelDispatcherBase dispatcherBase in serviceHostBase.ChannelDispatchers) { ChannelDispatcher dispatcher = dispatcherBase as ChannelDispatcher; foreach (EndpointDispatcher endpointDispatcher in dispatcher.Endpoints) { endpointDispatcher.DispatchRuntime.InstanceContextProvider = extension; } }
Generating DataMatrix In Visual Basic .NET
Using Barcode generation for .NET Control to generate, create Data Matrix 2d barcode image in VS .NET applications.
www.OnBarcode.com
Linear Maker In C#.NET
Using Barcode creation for .NET Control to generate, create 1D image in .NET applications.
www.OnBarcode.com
Now that the attribute has been created, the service s implementation class must be decorated with it. 15. First, in Solution Explorer, double-click SessionService. 16. In the class declaration, add the Shareable attribute. When you re finished, the class declaration should look like the following:
Print Matrix Barcode In C#
Using Barcode generation for VS .NET Control to generate, create Matrix Barcode image in VS .NET applications.
www.OnBarcode.com
Code-39 Drawer In Visual C#.NET
Using Barcode generator for .NET Control to generate, create Code 39 Extended image in .NET framework applications.
www.OnBarcode.com
' VB <ServiceBehavior(InstanceContextMode:=InstanceContextMode.Single)> _ <Shareable> _ Public Class SessionService Implements ISession // C# [ServiceBehavior(InstanceContextMode=InstanceContextMode.Single)] [Shareable] public class SessionService : ISession
EAN128 Generator In Visual C#.NET
Using Barcode creator for .NET framework Control to generate, create EAN / UCC - 13 image in .NET applications.
www.OnBarcode.com
ISBN Printer In C#
Using Barcode generation for VS .NET Control to generate, create International Standard Book Number image in .NET applications.
www.OnBarcode.com
Lesson 1: Instancing Modes
QR Code Generation In Objective-C
Using Barcode creation for iPad Control to generate, create Quick Response Code image in iPad applications.
www.OnBarcode.com
Encode Barcode In VS .NET
Using Barcode generation for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
17. Before starting the demo, in Solution Explorer, double-click the Program.cs or Module1.vb file in TestClient. Notice that there is a loop that prompts for an instance ID. Within that loop, there is a using block for the proxy to the service. This means that the same session will not be used for each call and that the only way for the instances to be maintained is through the provider that you have just written. 18. Ensure that TestClient is set to be the startup project, and then launch the application by pressing F5. You will prompted for an instance ID. 19. Enter the instance ID of your choice (say, 123, to keep it simple). The returned message indicates that this method has been called once. 20. Enter the same instance ID, and the instance has been called twice. Enter a different instance ID, and the counter restarts; if you later duplicate an earlier instance ID, you will see the previous counter incremented in the output on the console. When you have finished exercising the application, press Enter to terminate.
Code 39 Encoder In Objective-C
Using Barcode printer for iPhone Control to generate, create Code39 image in iPhone applications.
www.OnBarcode.com
QR Code 2d Barcode Generation In Java
Using Barcode creation for Eclipse BIRT Control to generate, create QR Code 2d barcode image in Eclipse BIRT applications.
www.OnBarcode.com
Lesson Summary
Encoding QR Code In VS .NET
Using Barcode creation for ASP.NET Control to generate, create QR Code image in ASP.NET applications.
www.OnBarcode.com
Generate Bar Code In Objective-C
Using Barcode printer for iPhone Control to generate, create bar code image in iPhone applications.
www.OnBarcode.com
The instance mode determines the relationship between the client and the instance of the service s implementation class. Along with the standard modes, WCF also provides a provider model to determine the instance context that should be used to process a request. PerCall is the default mode, and it maintains a one-to-one association between method calls and instances. PerSession creates an instance for each client proxy whereas an instance mode of Single results in one instance handling every request.
Paint GS1 DataBar Truncated In Java
Using Barcode printer for Java Control to generate, create DataBar image in Java applications.
www.OnBarcode.com
Read Barcode In Visual Basic .NET
Using Barcode scanner for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Lesson Review
You can use the following questions to test your knowledge of the information in Lesson 1, Instancing Modes. The questions are also available on the companion CD if you prefer to review them in electronic form.
NOTE
Answers
Answers to these questions and explanations of why each answer choice is correct or incorrect are located in the Answers section at the end of the book.
10
Sessions and Instancing
1. You have created a WCF application by which the client communicates with the service, using the netTcpBinding. You would like to minimize any possible threading and synchronization issues in the service. Which instance mode should you use A. Per call B. Per session C. Singleton D. Instance context provider 2. You have created a WCF application by which the client communicates with the service, using the wsTcpBinding. A number of methods in the service retrieve a large quantity of relatively static data. You would like to minimize the processing time spent retrieving the data (and keep the data in a cache within the service object). Which instance mode should you use A. Per call B. Per session C. Singleton D. Instance context provider
Copyright © OnBarcode.com . All rights reserved.