C# 从Windsor容器解析需要数据模型依赖项的对象
我有一个C# 从Windsor容器解析需要数据模型依赖项的对象,c#,dependency-injection,inversion-of-control,castle-windsor,C#,Dependency Injection,Inversion Of Control,Castle Windsor,我有一个AccountViewModel对象,它的构造函数中需要两个参数:在WindsorContainer中注册的DataStore对象和Account数据模型对象 现在,当用户在帐户列表中选择帐户时,我需要使用所选帐户从容器中解析AccountViewModel对象 但问题是该帐户未在容器中注册,当我在SelectionChanged事件中注册它时,我遇到了重复的注册错误 我还研究了每个依赖项的各种生命周期,但我仍然无法找到解决方案(我显然是使用IoC框架的初学者,因为我更喜欢自己的工厂类)
AccountViewModel
对象,它的构造函数中需要两个参数:在WindsorContainer
中注册的DataStore
对象和Account
数据模型对象
现在,当用户在帐户列表中选择帐户时,我需要使用所选帐户从容器中解析AccountViewModel
对象
但问题是该帐户未在容器中注册,当我在SelectionChanged
事件中注册它时,我遇到了重复的注册错误
我还研究了每个依赖项的各种生命周期,但我仍然无法找到解决方案(我显然是使用IoC框架的初学者,因为我更喜欢自己的工厂类)。从构造函数中排除数据对象,并通过初始化方法传递数据
public class AccountModel
{
public int Id { get; set; }
// some more properties
}
public interface IAccountService
{
Task<AccountModel> GetByIdAsync(int id);
}
public class AccountViewModel
{
public AccountViewModel(IAccountService accountService)
{
AccountService = accountService;
}
protected IAccountService AccountService { get; }
private Task LoadFromModelAsync(AccountModel model)
{
Id = model.Id;
_originalModel = model;
return Task.CompletedTask;
}
private AccountModel _originalModel;
public int Id { get; private set; }
public async Task InitializeAsync(object parameter)
{
switch (parameter)
{
case null:
await LoadFromModelAsync(new AccountModel());
break;
case int id:
{
var model = await AccountService.GetByIdAsync(id);
await LoadFromModelAsync(model);
break;
}
case AccountModel model:
await LoadFromModelAsync(model);
break;
default:
throw new InvalidOperationException();
}
}
}
公共类AccountModel
{
公共int Id{get;set;}
//更多属性
}
公共接口服务
{
任务GetByIdAsync(int-id);
}
公共类AccountViewModel
{
公共帐户视图模型(IAccountService accountService)
{
AccountService=AccountService;
}
受保护的IAccountService帐户服务{get;}
私有任务LoadFromModelAsync(AccountModel模型)
{
Id=model.Id;
_原始模型=模型;
返回Task.CompletedTask;
}
私人账户模型(原始模型);
public int Id{get;private set;}
公共异步任务InitializeAsync(对象参数)
{
开关(参数)
{
大小写为空:
等待LoadFromModelAsync(新AccountModel());
打破
案例int id:
{
var模型=等待AccountService.GetByIdAsync(id);
等待LoadFromModelAsync(模型);
打破
}
案例模型:
等待LoadFromModelAsync(模型);
打破
违约:
抛出新的InvalidOperationException();
}
}
}
从构造函数中排除数据对象,并通过初始化方法传递数据
public class AccountModel
{
public int Id { get; set; }
// some more properties
}
public interface IAccountService
{
Task<AccountModel> GetByIdAsync(int id);
}
public class AccountViewModel
{
public AccountViewModel(IAccountService accountService)
{
AccountService = accountService;
}
protected IAccountService AccountService { get; }
private Task LoadFromModelAsync(AccountModel model)
{
Id = model.Id;
_originalModel = model;
return Task.CompletedTask;
}
private AccountModel _originalModel;
public int Id { get; private set; }
public async Task InitializeAsync(object parameter)
{
switch (parameter)
{
case null:
await LoadFromModelAsync(new AccountModel());
break;
case int id:
{
var model = await AccountService.GetByIdAsync(id);
await LoadFromModelAsync(model);
break;
}
case AccountModel model:
await LoadFromModelAsync(model);
break;
default:
throw new InvalidOperationException();
}
}
}
公共类AccountModel
{
公共int Id{get;set;}
//更多属性
}
公共接口服务
{
任务GetByIdAsync(int-id);
}
公共类AccountViewModel
{
公共帐户视图模型(IAccountService accountService)
{
AccountService=AccountService;
}
受保护的IAccountService帐户服务{get;}
私有任务LoadFromModelAsync(AccountModel模型)
{
Id=model.Id;
_原始模型=模型;
返回Task.CompletedTask;
}
私人账户模型(原始模型);
public int Id{get;private set;}
公共异步任务InitializeAsync(对象参数)
{
开关(参数)
{
大小写为空:
等待LoadFromModelAsync(新AccountModel());
打破
案例int id:
{
var模型=等待AccountService.GetByIdAsync(id);
等待LoadFromModelAsync(模型);
打破
}
案例模型:
等待LoadFromModelAsync(模型);
打破
违约:
抛出新的InvalidOperationException();
}
}
}
保持AccountViewModel
不变,但:
然后,您可以实现(并向DI容器注册)工厂,如下所示:
public class AccountViewModelFactory : IAccountViewModelFactory
{
public AccountViewModelFactory(IAccountService accountService)
{
AccountService = accountService;
}
public IAccountService AccountService { get; }
public AccountViewModel Create(AccountModel model)
{
return new AccountViewModel(AccountService, model);
}
}
public class AccountViewModel
{
public AccountViewModel(IAccountService accountService, AccountModel model)
{
AccountService = accountService;
Model = model;
}
public IAccountService AccountService { get; }
public AccountModel Model { get; }
}
假设AccountViewModel
如下所示:
public class AccountViewModelFactory : IAccountViewModelFactory
{
public AccountViewModelFactory(IAccountService accountService)
{
AccountService = accountService;
}
public IAccountService AccountService { get; }
public AccountViewModel Create(AccountModel model)
{
return new AccountViewModel(AccountService, model);
}
}
public class AccountViewModel
{
public AccountViewModel(IAccountService accountService, AccountModel model)
{
AccountService = accountService;
Model = model;
}
public IAccountService AccountService { get; }
public AccountModel Model { get; }
}
保持
AccountViewModel
不变,但:
然后,您可以实现(并向DI容器注册)工厂,如下所示:
public class AccountViewModelFactory : IAccountViewModelFactory
{
public AccountViewModelFactory(IAccountService accountService)
{
AccountService = accountService;
}
public IAccountService AccountService { get; }
public AccountViewModel Create(AccountModel model)
{
return new AccountViewModel(AccountService, model);
}
}
public class AccountViewModel
{
public AccountViewModel(IAccountService accountService, AccountModel model)
{
AccountService = accountService;
Model = model;
}
public IAccountService AccountService { get; }
public AccountModel Model { get; }
}
假设AccountViewModel
如下所示:
public class AccountViewModelFactory : IAccountViewModelFactory
{
public AccountViewModelFactory(IAccountService accountService)
{
AccountService = accountService;
}
public IAccountService AccountService { get; }
public AccountViewModel Create(AccountModel model)
{
return new AccountViewModel(AccountService, model);
}
}
public class AccountViewModel
{
public AccountViewModel(IAccountService accountService, AccountModel model)
{
AccountService = accountService;
Model = model;
}
public IAccountService AccountService { get; }
public AccountModel Model { get; }
}