I just finished teaching the first week of a 9-week, super-intensive, hands-on boot camp that focuses on TypeScript/ASP.NET Web API/AngularJS. I decided to write a series of blog posts that describes each week of the camp. Who makes it. The challenges the students encounter. And, the material that we cover
How do callbacks, promises and async/await compare to each other? This article shows the same scenario using each of these three techniques so you can see the differences and choose which appeals most to you.
From LGPL to Polyform Noncommercial
From version 5, we have changed the license from LGPL to Polyform Noncommercial 1.0.0 - a license that permits noncommercial use only. In combination with the Polyform Noncommercial license we sell licenses for customers who use EPPlus in a commercial business. Since EPPlus has been around for a while, you might wonder why we have decided to do this change.
Filters in ASP.NET MVC allow you to run code before or after a particular stage in the execution pipeline. Filters can be configured globally, per-controller, or per-action.
Hello! I work for the Angular core team on internationalization (i18n) and we are trying to get a better idea of the things that we need to improve/focus on in Angular regarding i18n. I created this survey: https://goo.gl/forms/0BIXXVP58RqbzzBM2 If you care about internationalization, please take 5mn to do it! Thanks!
Install-Package MediatR
Install-Package MediatR.Extensions.Microsoft.DependencyInjection
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc();
services.AddMediatR();
} public class Customer
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public DateTime RegistrationDate { get; set; }
} public class CustomerDto
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string RegistrationDate { get; set; }
} public class CreateCustomerCommand : IRequest<CustomerDto>
{
public CreateCustomerCommand(string firstName, string lastName)
{
FirstName = firstName;
LastName = lastName;
}
public string FirstName { get; }
public string LastName { get; }
} 
public class CreateCustomerCommandHandler : IRequestHandler<CreateCustomerCommand, CustomerDto>
{
readonly ApplicationDbContext _context;
readonly IMapper _mapper;
public CreateCustomerCommandHandler(ApplicationDbContext context, IMapper mapper)
{
_context = context;
_mapper = mapper;
}
public async Task<CustomerDto> Handle(CreateCustomerCommand createCustomerCommand, CancellationToken cancellationToken)
{
Customer customer = _mapper.Map<Customer>(createCustomerCommand);
await _context.Customers.AddAsync(customer, cancellationToken);
await _context.SaveChangesAsync(cancellationToken);
return _mapper.Map<CustomerDto>(customer);
}
} public class DomainProfile : Profile
{
public DomainProfile()
{
CreateMap<CreateCustomerCommand, Customer>()
.ForMember(c => c.RegistrationDate, opt =>
opt.MapFrom(_ => DateTime.Now));
CreateMap<Customer, CustomerDto>()
.ForMember(cd => cd.RegistrationDate, opt =>
opt.MapFrom(c => c.RegistrationDate.ToShortDateString()));
}
} [HttpPost]
public async Task<IActionResult> CreateCustomer([FromBody] CreateCustomerCommand createCustomerCommand)
{
CustomerDto customer = await _mediator.Send(createCustomerCommand);
return CreatedAtAction(nameof(GetCustomerById), new { customerId = customer.Id }, customer);
} 