Tech learning

In any new application handling TimeZone/DateTime is mostly least priority and generally, if someone is concerned then it would be handled by using DateTime.UtcNow on codes while creating current dates and converting incoming Date to UTC to save on servers. Basically, the process is followed by saving DateTime to UTC format in a database and keep converting data to native format based on user region or single region in the application's presentation layer. The above is tedious work and have to be followed religiously. If any developer misses out the manual conversion, then that area of code/view would not work. With newer frameworks, there are flexible ways to deal/intercept incoming or outgoing calls to simplify conversion of TimeZones. These are steps/process to achieve it. 1. Central code for storing user's state about TimeZone. Also, central code for conversion logic based on TimeZones. 2. Dependency injection for the above class to ...

This article is not directly related to UnitOfWork but leveraging Asp.Net Core Dependency Injection to consume Unit Of Work. In one of the previous article about project architecture, I was not very satisfied with the approach for Unit Of Work implementation for initialization of repository even if with some advantage. Here is old code for UnitOfWork. public sealed partial class MyProjectUnitOfWork : UnitOfWork<DbContext>, IMyProjectUnitOfWork { public MyProjectUnitOfWork(IContextFactory<DbContext> contextFactory) : base(contextFactory) { } /// <summary> /// BookRepository holder /// </summary> private MyProject.DB.Repository.BookRepository _bookRepository; /// <summary> /// Gets the BookRepository repository. /// </summary> /// <value> /// The BookRepository repository. /// </value> MyProject.Interface.Repositor...

Lightweight Directory Access Protocol (LDAP), the name itself explain it. An application protocol used over an IP network to access the distributed directory information service. The first and foremost thing is to add references for consuming LDAP. This has to be done by adding reference from Global Assembly Cache (GAC) into project.json "frameworks": { "net461": { "frameworkAssemblies": { "System.DirectoryServices": "4.0.0.0", "System.DirectoryServices.AccountManagement": "4.0.0.0" } } }, These  System.DirectoryServices  and  System.DirectoryServices.AccountManagement  references are used to consume LDAP functionality. It is always better to have an abstraction for irrelevant items in consuming part. For an example, the application does not need to know about PrincipalContext or any other dependent items from those two references to make it extensible. So, we can begin wi...

In AutoMapper 4.2 version, static implementation is removed with instance approach. It could be a nightmare to migrate the codes to the newer version with instance approach. I will be putting up guide for migrating codes from the older version to instance approach if someone has used Profile based approach. Previous implementation (old implementation) Profile based implementation mapping public class UserProfileMapping : Profile { protected override void Configure() { Mapper.CreateMap<UserProfile, PreferenceViewModel>() .ForMember(vm => vm.UserId, m => m.MapFrom(profile => profile.Id)); } } Single class for registering all AutoMapper configuration public static class AutoMapperConfiguration { public static void Configure() { Mapper.Initialize(cfg => { cfg.AddProfile(new UserProfileMapping()); }); } } ...

It can be bit tricky to configure both Ninject and Asp.Net Identity UserManager if some value is expected from DI to configure UserManager. We will look into configuring both and also use OwinContext to get UserManager. As usual, all configuration need to be done on Startup.cs. It is just a convention but can be used with different name, the important thing is to decorate class with following attribute to make it Owin start-up: [assembly: OwinStartup(typeof(MyProject.Web.Startup))] Ninject configuration Configuring Ninject kernel through method which would be used to register under Owin. Startup.cs public IKernel CreateKernel() { var kernel = new StandardKernel(); try { //kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>(); // TODO: Put any other injection which are required. return kernel; } catch { kernel.Dispose(); thro...

Project architecture is like garden, we plant the things in certain order and eventually they grow in similar manner. If things are planted well then they will all look(work) great and easier to manage. If they grow as cumbersome it would difficult to maintain and with time more problems would be happening in maintenance. There is no any fixed or known approach to decide project architecture and specially with Agile Methodology. In Agile Methodology, we cannot predict how our end products will look like similarly we cannot say a certain architecture will fit well for entire development lifespan for project. So, the best thing is to modify the architecture as per our application growth. I understand that it sounds good but will be far more problematic with actual development. If it is left as it is then more problems will arise with time. Just think about moving plant vs a full grown tree. Coming to technical side, In this article, I will be explaining about the various techniques ...