EduSarva

1. Open the solution attached here . 2. Add a new project > select Windows service from Visual C# > Windows template 3. Name it WinSrvHost and click OK 4. Go to the code view of Service1.cs, notice that you have been provided with a template that you can start working with. Notice that this class is derived from the ServiceBase class. 5. In the design view, go to property change the name and service name to ProdSrvHost. 6. Add reference to System.Servicemodel and ProductServiceLibrary project. 7. Create a ServiceHost, by add the  following code: ServiceHost host = new ServiceHost(typeof(ProductService)); 8. Override OnStart() method of ServiceBase Add the following code host.Open(); //use the one in the example 9. Override OnStop() method of ServiceBase Add the following code host.Close();//use the one in the example 10. Copy app.config from console host. Note that service metadata behavior is enabled (httpGetEnabled=true). 11. Add an install...

Creating custom service host enables you to change a service's run-time behavior. 1.  Download and open the WCF application here . 2. In the service host project add a class called NewProdSrvHost. 3. This public class inherits from ServiceHost class. 4. Add a default constructor calls the base(typeof(ProductService)) 5. Override OnOpening() method to add a new endpoint as shown below:   base .OnOpening();   this .AddServiceEndpoint( typeof ( IProductService ), new BasicHttpBinding (), "newservice" ); 6. To always enable metadata even if the user turns it off: protected override void OnOpening() {   base .OnOpening();   this .AddServiceEndpoint( typeof ( IProductService ), new BasicHttpBinding (), "newservice" );   ServiceMetadataBehavior mdb = this .Description.Behaviors.Find< ServiceMetadataBehavior >();    if (mdb != null )    {       mdb.HttpGetEnab...

1. Open the WCF service application that you created earlier or download start file here . In Service Project 2. Update the OperationContract to include a TransactionFlow attribute. This ensure a transaction is required to invoke the SubmitReview method.          [ TransactionFlow ( TransactionFlowOption .Mandatory)]         [ OperationContract ]         void SubmitReview ( ProductReview pr); 3. In the service implementation for SubmitReview, modify OperationBehavior attribute as shown below: [ OperationBehavior (TransactionScopeRequired = true , TransactionAutoComplete = true )] void IProductService .SubmitReview( ProductReview pr) 4. Add reference to System.Messaging and add  using System.Messaging; 5. In addition to writing to an XML file, lets also write to a transactional queue. First we need to create a queue. 6. Open Computer Man...

When a message is sent across the network many things can go wrong. The message can be lost, dropped or sent in wrong order. This can happen due to a variety of reason, network failure, network congestion and proxy failure are few reasons among many other reasons.  WCF Reliablity features sessions are used to take care most of the above issues. There are two types of reliability Message reliability and Transport reliability. These reliability features simplifies coding needed. Enabling reliable session Reliable sessions are built on top of SOAP messaging and enables connection maintenance, verification and message ordering. Turning on reliable session allow the application to ignore duplicates, retry dropped connection and reestablish connections, notify service when the client is not available anymore. However, the cost of this reliability is increased traffic. Reliable session is easy to turn on. For some binding the reliable session is on by default whereas for ot...

1. Press Windows Key > Type Computer Management 2. Click Local Users and Groups > click Groups 3. Add a New Group  4. Give a name for the group and add some users to the group as required. 5. Click Create to create the group. 

This blog is a continuation of WCF security blog. Authorization in WCF Using Impersonation 1. Open the application that you created using WCF Security blog. 2. Let's say the application requires that the user who invokes a method is authorized to make changes to a file or write to a folder. To do this, we have to enable authorization. In the previous exercise we used the user, user2 to invoke the methods in the service. Let's now check if the user2 is authorized to write to a folder.  3. Change the SubmitReview method in Service project as given below:  void IProductService .SubmitReview( ProductReview pr) {    using ( FileStream stream = new FileStream ( "lastMessage.xml" , FileMode .Create, FileAccess .Write))    {      DataContractSerializer dcs = new DataContractSerializer ( typeof ( ProductReview ));      dcs.WriteObject(stream, pr);    }    Review...

1. Press Windows key > select Settings > select Accounts > click  Family and other users > 2. Under Other users , click Add someone else to this PC 3. Select I don't have this person's sign-in information , and click Next. 4. Click Add user without Microsoft Account , and click Next. 5. Now fill in the required fields and click Next. 6. All done!