Asynchronous methods in the upcoming versions of Visual Basic and C# are a great way to get the callbacks out of your asynchronous programming. In this article, I’ll take a closer look at what the new await keyword actually does, starting at the conceptual level and working my way down to the iron.
Type 'System.String' does not have a default constructor Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentException: Type 'System.String' does not have a default constructor
CreateMap<DateTime, string>().ConvertUsing(new DateTimeToPersianDateTimeConverter());
CreateMap<User, UserViewModel>(); public class User : IdentityUser<long, UserLogin, UserRole, UserClaim>
{
public virtual DateTime RegisterDate { get; set; }
// bla bla
} public class UserViewModel
{
public string RegisterDate { get; set; }
} public List<UserViewModel> GetUsersByPage(int pageNumber, string pagerSortBy, string pagerSortOrder, string term, out int records,
int recordsPerPage)
{
//bla bla bla
return users.Skip(skipRecords) /*این خط خطا داره*/
.Take(recordsPerPage)
.Project(_mappingEngine).To<UserViewModel>().Future().ToList();
} CreateMap<User, UserViewModel>() .ForMember(d => d.RegisterDate, m => m.MapFrom(s => s.RegisterDate.ToString()));
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<Nullable>enable</Nullable>
</PropertyGroup> public class Person
{
public string? Name { get; set; }
public string? Family { get; set; } This command allows cleaning up project and assembly references that have no actual usages in source code. You can apply this command on a project, solution folder, or the entire solution. Before deletion is complete, you will be able to see all references that are going to be removed and. if necessary, preserve the ones that you want to keep.
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