Asp.Net MVC3:在ValidationContext中设置自定义IServiceProvider,以便验证器可以解析服务

public class CustomServiceProvider : IServiceProvider
{
    private readonly IServiceProvider _serviceProvider;

    public CustomServiceProvider(IServiceProvider serviceProvider)
    {
        _serviceProvider = serviceProvider;
    }

    public object GetService(Type serviceType)
    {
        // 在这里可以自定义服务解析逻辑
        if (serviceType == typeof(IMyService))
        {
            return new MyService();
        }

        return _serviceProvider.GetService(serviceType);
    }
}

public class MyModel : IValidatableObject
{
    [Required]
    public string Name { get; set; }

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        var serviceProvider = validationContext.GetService<IServiceProvider>();
        var myService = (IMyService)serviceProvider.GetService(typeof(IMyService));

        // 使用myService进行验证逻辑
        // ...
    }
}

public class MyController : Controller
{
    private readonly IMyService _myService;

    public MyController(IMyService myService)
    {
        _myService = myService;
    }

    [HttpPost]
    public ActionResult Create(MyModel model)
    {
        var validationContext = new ValidationContext(model, null, new CustomServiceProvider(HttpContext.RequestServices));
        var validationResults = new List<ValidationResult>();

        if (!Validator.TryValidateObject(model, validationContext, validationResults, true))
        {
            // 处理验证失败的情况
            // ...
        }

        // 处理验证成功的情况
        // ...
    }
}