private void UnityAtRuntime()
{
// Create a new Unity container
IUnityContainer UnityContainerObject = new UnityContainer();
Console.WriteLine("\nRetrieved the populated Unity Container.");
// Resolve an instance (Create an object) of the class registered for ILogger.
// And inejcts the object which specified in config file container section.
ILogger ILoggerObject = UnityContainerObject.Resolve <MyLogger>();
// Invoke the method from Injected object and display the result
Console.WriteLine("\n" + ILoggerObject.WriteMessage("My Logger"));
UnityContainerObject.Teardown(ILoggerObject);
// Register a new default (un-named) mapping with the container
// This will replaces the existing mapping in the container for ILogger
UnityContainerObject.RegisterType <ILogger, MyFastLogger>();
Console.WriteLine("\nRegistered a new mapping for IMyInterface to MyOtherObject.");
ILoggerObject = UnityContainerObject.Resolve <ILogger>();
Console.WriteLine("\n" + ILoggerObject.WriteMessage("Fast Logger"));
// Resolve an instance of the appropriate class registered for ILogger
// Using the specified mapping name in the configuration file (may be empty for the default mapping)
ILogger ILoggerInstance = UnityContainerObject.Resolve <ILogger>("StandardLogger");
// Get the logger to write a message and display the result
Console.WriteLine("\n" + ILoggerInstance.WriteMessage("HELLO UNITY!"));
// Resolve an instance of the appropriate class registered for ILogger
// Using the specified mapping name (may be empty for the default mapping)
ILoggerInstance = UnityContainerObject.Resolve <ILogger>("SuperFastLogger"); // This name specifies the type of logger required
// Get the logger to write a message and display the result
Console.WriteLine("\n" + ILoggerInstance.WriteMessage("HELLO UNITY!"));
// Resolve an instance of the concrete MyObjectWithInjectedLogger class
// This class contains a reference to ILogger in the constructor parameters
MyObjectWithInjectedLogger MyObjectWithInjectedLoggerInstance = UnityContainerObject.Resolve <MyObjectWithInjectedLogger>();
// Get the injected logger to write a message and display the result
Console.WriteLine("\n" + MyObjectWithInjectedLoggerInstance.GetObjectStringResult());
Console.ReadLine();
}
private void UnityWithConfiguration()
{
// Create and populate a new Unity container from configuration
UnityConfigurationSection UnityConfigurationSectionObject = (UnityConfigurationSection)ConfigurationManager.GetSection("UnityBlockConfiguration");
IUnityContainer UnityContainerObject = new UnityContainer();
UnityConfigurationSectionObject.Containers["ContainerOne"].Configure(UnityContainerObject);
Console.WriteLine("\nRetrieved the populated Unity Container.");
// Get the logger to write a message and display the result. No name in config file.
ILogger ILoggerInstance = UnityContainerObject.Resolve <ILogger>();
Console.WriteLine("\n" + ILoggerInstance.WriteMessage("HELLO Default UNITY!"));
// Resolve an instance of the appropriate class registered for ILogger
// Using the specified mapping name in the configuration file (may be empty for the default mapping)
ILoggerInstance = UnityContainerObject.Resolve <ILogger>("StandardLoggerMappedInConfig");
// Get the logger to write a message and display the result
Console.WriteLine("\n" + ILoggerInstance.WriteMessage("HELLO StandardLogger!"));
// Resolve an instance of the appropriate class registered for ILogger
// Using the specified mapping name (may be empty for the default mapping)
ILoggerInstance = UnityContainerObject.Resolve <ILogger>("SuperFastLoggerMappedInConfig");
// Get the logger to write a message and display the result
Console.WriteLine("\n" + ILoggerInstance.WriteMessage("HELLO SuperFastLogger!"));
// Constructor Injection.
// Resolve an instance of the concrete MyObjectWithInjectedLogger class
// This class contains a reference to ILogger in the constructor parameters
MyObjectWithInjectedLogger MyObjectWithInjectedLoggerInstance = UnityContainerObject.Resolve <MyObjectWithInjectedLogger>();
// Get the injected logger to write a message and display the result
Console.WriteLine("\n" + MyObjectWithInjectedLoggerInstance.GetObjectStringResult());
// Throws error as we are trying to create instance for interface.
//IMyInterface IMyInterfaceObject = UnityContainerObject.Resolve<IMyInterface>();
IMyInterface IMyInterfaceObject = UnityContainerObject.Resolve <IMyInterface>();
Console.WriteLine("\n" + IMyInterfaceObject.GetObjectStringResult());
//If we are not sure whether a named registration exists for an object,
// we can use the ResolveAll method to obtain a list of registrations and mappings, and then check for the object we need in the list returned by this method.
// However, this will cause the container to generate all the objects for all named registrations for the specified object type, which will affect performance.
IEnumerable <object> IEnumerableObjects = UnityContainerObject.ResolveAll(typeof(ILogger));
int i = 0;
foreach (ILogger foundObject in IEnumerableObjects)
{
// Convert the object reference to the "real" type
ILogger theObject = foundObject as ILogger;
i++;
if (null != theObject)
{
Console.WriteLine(theObject.WriteMessage("Reading Object " + i.ToString()));
}
}
UnityContainerObject.Teardown(IMyInterfaceObject);
Console.ReadLine();
}
