In Last post I gave you introduction for dependency Injection.
Here we gonna Use it in real code
First I create MVC project and Add following classes to it.
Here is my folder structure
Then I create My MVC UserController and Its View. Code is same as I did in prev post
Here is View
Now I'm gonna install Unity Nuget package for DI framework
Then real Dependency Injection begins.
Main Focus
1. Create Class DI_Register
2. Create UserResolver Class for dependency resolving. It will using the Unity's IDependancyResolver Interface for resolving implementation . It eill take care of your dependency resolving
3. Then go to the AppStart (startup.auth.cs) and call dependency register in application bigining
Then Run and see the magic :)
Full code In Git ..
Enjoy Coding
Here we gonna Use it in real code
First I create MVC project and Add following classes to it.
public interface IUserService { string GetUserName(string name); }
public class UserService : IUserService { public string GetUserName(string name) { return string.Format("Hello {0}", name); } }
Here is my folder structure
Then I create My MVC UserController and Its View. Code is same as I did in prev post
public class UserController : Controller { private IUserService _userService; public UserController(IUserService userService) { _userService = userService; } // GET: User public ActionResult Index() { ViewBag.UserMessage = _userService.GetUserName("Dependency Unity"); return View(); } }
Here is View
@{ ViewBag.Title = "Index"; } <h2>@ViewBag.UserMessage</h2>
That's all.
Now I'm gonna install Unity Nuget package for DI framework
Then real Dependency Injection begins.
Main Focus
- Register
- Resolver
1. Create Class DI_Register
public static class Di_Register { /// <summary> /// Register And resolver of Dependency /// </summary> public static void RegisterDependancy() { IUnityContainer container = new UnityContainer(); RegisterDependancy(container); DependencyResolver.SetResolver(new UserResolver(container)); } /// <summary> /// Type registration /// </summary> /// <param name="container"></param> private static void RegisterDependancy(IUnityContainer container) { container.RegisterType<IUserService, UserService>(); } }
2. Create UserResolver Class for dependency resolving. It will using the Unity's IDependancyResolver Interface for resolving implementation . It eill take care of your dependency resolving
/// <summary> /// Resolver /// </summary> internal class UserResolver : IDependencyResolver { private IUnityContainer _unityContainer; public UserResolver(IUnityContainer unityContainer) { _unityContainer = unityContainer; } /// <summary> /// For one object /// </summary> /// <param name="serviceType"></param> /// <returns></returns> public object GetService(Type serviceType) { try { return _unityContainer.Resolve(serviceType); } catch (Exception) { return null; } } /// <summary> /// For multiple objects /// </summary> /// <param name="serviceType"></param> /// <returns></returns> public IEnumerable<object> GetServices(Type serviceType) { try { return _unityContainer.ResolveAll(serviceType); } catch (Exception) { return null; } } }
3. Then go to the AppStart (startup.auth.cs) and call dependency register in application bigining
Di_Register.RegisterDependancy();
Then Run and see the magic :)
Full code In Git ..
Enjoy Coding
