Ошибка не может разрешить сервис типа почему и как ее решить ?
An unhandled exception occurred while processing the request.
<div class="titleerror">InvalidOperationException: Unable to resolve service for type 'TabDataAccess.Repositories.RepositoryTab`1[TabDataAccess.Dto.Employee]' while attempting to activate 'WebTabCore.Controllers.EmployeeController'.</div>
Microsoft.Extensions.DependencyInjection.ActivatorUtilities.GetService(IServiceProvider sp, Type type, Type requiredBy, bool isDefaultParameterRequired)
<div id="stackpage" class="page">
InvalidOperationException: Unable to resolve service for type 'TabDataAccess.Repositories.RepositoryTab`1[TabDataAccess.Dto.Employee]' while attempting to activate 'WebTabCore.Controllers.EmployeeController'.
what i do as following
An unhandled exception occurred while processing the request.
InvalidOperationException: Unable to resolve service for type 'TabDataAccess.Repositories.RepositoryTab`1[TabDataAccess.Dto.Employee]' while attempting to activate 'WebTabCore.Controllers.EmployeeController'.
Microsoft.Extensions.DependencyInjection.ActivatorUtilities.GetService(IServiceProvider sp, Type type, Type requiredBy, bool isDefaultParameterRequired)
InvalidOperationException: Unable to resolve service for type 'TabDataAccess.Repositories.RepositoryTab`1[TabDataAccess.Dto.Employee]' while attempting to activate 'WebTabCore.Controllers.EmployeeController'.
what i do as following what i do as below
What I have tried:
<pre>public class Employee
{
public int EmployeeId { get; set; }
public int BranchCode { get; set; }
public string EmployeeName { get; set; }
public int EmployeeAge { get; set; }
}
Repository
public class RepositoryTab<T> : IrepositoryTab<T> where T : class
{
protected TabDbContext db { get; set; }
private DbSet<T> dbSet;
public RepositoryTab(TabDbContext Tabdb)
{
db = Tabdb;
dbSet = db.Set<T>();
}
public IEnumerable<T> GetAll()
{
return dbSet.ToList();
}
}
public interface IrepositoryTab<T> where T : class
{
IEnumerable<T> GetAll();
}
configureservices
services.AddDbContext<TabDbContext>(options =>
options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
appsetting.json
"ConnectionStrings": {
"DefaultConnection": "Server=.\\SQL2014;Database=ErpWeb;uid=sa;pwd=abc123;ConnectRetryCount=0;" why this exceptioh happen
Bryian Tan
Что в конструкторе EmployeeController?
ahmed_sa
публичный класс EmployeeController : контроллер
{
private IrepositoryTab<employee> _repository = null;
public EmployeeController(RepositoryTab<employee> emp)
{
это._repository = Эми;
}
индекс общественного IActionResult ()
{
сотрудники ВАР = _repository.Способность();
обратный просмотр(сотрудники);
}
}