By John Sharp

Your hands-on, step by step advisor to development attached, service-oriented applications.

Teach your self the necessities of home windows communique beginning (WCF) four -- one step at a time. With this functional, learn-by-doing instructional, you get the transparent assistance and hands-on examples you want to start growing internet prone for strong Windows-based enterprise applications.

Discover how to:
• construct and host cleaning soap and relaxation companies
• keep carrier contracts and information contracts
• regulate configuration and communications programmatically
• enforce message encryption, authentication, and authorization
• deal with id with home windows CardSpace
• commence operating with home windows Workflow beginning to create scalable and sturdy enterprise companies
• enforce carrier discovery and message routing
• Optimize functionality with provider throttling, encoding, and streaming
• combine WCF prone with ASP.NET consumers and firm providers parts

Your step-by-step electronic content material includes:
• perform routines
• Downloadable code samples
• totally searchable on-line variation of the booklet -- with limitless entry on the net

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B. In the dialog box, click OK to confirm the deletion. 3. Add a new item to the ProductsEntityModel project: ❏❏ In Solution Explorer, right-click the ProductsEntityModel project, point to Add, and then click New Item. 4. In the Add New Item—ProductsEntityModel dialog box, in the Installed Templates pane click the Data folder under Visual C# Items. NET Entity Data Model template. edmx, and then click Add. The Entity Data Model Wizard appears. 5. In the Entity Data Model Wizard, on the Choose Model Contents page, click Generate From Database, and then click Next.

However, such input validation has been omitted in this example, for clarity. 11. Add the ChangeStockLevel method (shown in bold in the following) to the Products­ ServiceImpl class: public class ProductsServiceImpl : IProductsService { ... public bool ChangeStockLevel(string productNumber, short newStockLevel, string shelf, int bin) { // Modify the current stock level of the selected product // in the ProductInventory table. // If the update is successful then return true, otherwise return false.

Note You can use any other types that already have a data contract defined for them as the types of data members inside a data contract. You can also use any serializable type. This includes types such as string, int, and decimal, as well as many of the more complex types such as the Collection classes. info 18 Windows Communication Foundation 4 Step by Step Define the service contract for the WCF service 1. Add the IProductsService interface shown in the following to the Products namespace, after the Product class: // Service contract describing the operations provided by the WCF service [ServiceContract] public interface IProductsService { // Get the product number of every product [OperationContract] List ListProducts(); // Get the details of a single product [OperationContract] ProductData GetProduct(string productNumber); // Get the current stock level for a product [OperationContract] int CurrentStockLevel(string productNumber); // Change the stock level for a product [OperationContract] bool ChangeStockLevel(string productNumber, short newStockLevel, string shelf, int bin); } Defining a service contract as an interface in this way lets you separate the definition of the contract from its implementation.

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