Unity CS0308错误

Question

我刚刚开始使用WPF和Unity从实现MVVM体系结构的伟大源代码构建应用程序。我跟着它几乎相同，并审查了他们使用的源代码，一切都几乎相同。我创建了一个类ContainerHelper类：

private static IUnityContainer _container; 
     static ContainerHelper() 
     { 
      _container = new UnityContainer(); 
      _container.RegisterType<IEmployeesRepository, EmployeesRepository>(
       new ContainerControlledLifetimeManager()); 
     } 

     public static IUnityContainer Container 
     { 
      get { return _container; } 
     } 

而且我已创建一个类EmployeeListViewModel：

私人IEmployeesRepository _repo;

public EmployeeListViewModel(IEmployeesRepository repo) 
{ 
    _repo = repo; 
    EditEmployeeCommand = new RelayCommand<Employees>(OnEditEmployee); 
    AddEmployeeCommand = new RelayCommand(OnAddEmployee); 
    ClearSearchCommand = new RelayCommand(OnClearSearch); 
} 

private string _SearchInput; 

public string SearchInput 
{ 
    get { return _SearchInput; } 
    set 
    { 
     SetProperty(ref _SearchInput, value); 
     FilterEmployee(_SearchInput); 
    } 
} 

private void FilterEmployee(string searchInput) 
{ 
    if (string.IsNullOrWhiteSpace(searchInput)) 
    { 
     Employees = new ObservableCollection<Employees>(_allEmployees); 
    } 
    else 
    { 
     Employees = new ObservableCollection<Employees>(_allEmployees.Where(e => e.FullName.ToLower().Contains(searchInput.ToLower()))); 
    } 
} 

private void OnClearSearch() 
{ 
    SearchInput = null; 
} 

private void OnEditEmployee(Employees emp) 
{ 
    EditEmployeeRequest(emp); 
} 

private void OnAddEmployee() 
{ 
    AddEmployeeRequested(new Employees { Id = Guid.NewGuid() }); 
} 

public event Action<Employees> AddEmployeeRequested = delegate { }; 
public event Action<Employees> EditEmployeeRequest = delegate { }; 

private ObservableCollection<Employees> _Employees; 
public ObservableCollection<Employees> Employees 
{ 
    get { return _Employees; } 
    set { SetProperty(ref _Employees, value); } 
} 

private List<Employees> _allEmployees; 
public async void LoadEmplooyees() 
{ 
    _allEmployees = await _repo.GetEmployeesAsync(); 
    Employees = new ObservableCollection<Employees>(_allEmployees); 
} 

public RelayCommand<Employees> EditEmployeeCommand { get; private set; } 
public RelayCommand AddEmployeeCommand { get; private set; } 
public RelayCommand ClearSearchCommand { get; private set; } 

}

这是代码使用ContainerHelper类执行和传递EmployeeListViewModel行：

private EmployeeListViewModel _EmployeeListViewModel; 
_EmployeeListViewModel = ContainerHelper.Container.Resolve<EmployeeListViewModel>(); 

我不明白为什么我得到一个非泛型方法使用IUnityContainer.Resolve（type，sring，params ResolverOverride []）的错误不能与类型参数一起使用。

我想更多地了解这个错误，我可以做什么来解决它。我已经看过在各个地方来寻找答案。

Answer 1

在您所呼叫的通用Resolve方法的代码文件的顶部添加以下using指令：

using Microsoft.Practices.Unity;