Asp.net mvc 3 控制器中重写的OnActionExecuting中设置的值为空

我创建了一个基本控制器类，该类重写OnActionExecuting，如下所示：

public class BaseController : Controller
{
    public string ActionName;
    public string ControllerName;

    protected override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        ActionDescriptor    actionDescriptor    = filterContext.ActionDescriptor;
        string              ActionName          = actionDescriptor.ActionName;
        string              ControllerName      = actionDescriptor.ControllerDescriptor.ControllerName;
        base.OnActionExecuting(filterContext);
    }
    .
    .
    .

在控制器中，我想使用这些值

public class MyController : BaseController
{
    public ActionResult Index(int page)
    {
        if (ActionName == null)
            throw new Exception("ASP.NET MVC3 ABSURDLY GROTESQUE ERROR. CALL FOR REINFORCEMENTS! SERVER CORE ABOUT TO EXPLODE!!!");
            .
            .
            .

---

首先调用OnActionExecuting并设置值。但是，每次到达控制器代码时，我的服务器内核都会爆炸…

不要在

OnActionExecuting

方法中将

string

放在这些变量之前，或者重新声明新的局部变量，并且字段保持为空且未分配：

public class BaseController : Controller
{
    public string ActionName;
    public string ControllerName;

    protected override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var actionDescriptor = filterContext.ActionDescriptor;
        ActionName = actionDescriptor.ActionName;
        ControllerName = actionDescriptor.ControllerDescriptor.ControllerName;
        base.OnActionExecuting(filterContext);
    }
}

为了更好地封装，请使用以下属性：

public class BaseController : Controller
{
    public string ActionName { get; private set; };
    public string ControllerName { get; private set; }

    protected override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var actionDescriptor = filterContext.ActionDescriptor;
        ActionName = actionDescriptor.ActionName;
        ControllerName = actionDescriptor.ControllerDescriptor.ControllerName;
        base.OnActionExecuting(filterContext);
    }
}

---

不要将

string

放在

OnActionExecuting

方法中的那些变量之前，否则您将重新声明新的局部变量，并且您的字段保持为空且未赋值：

public class BaseController : Controller
{
    public string ActionName;
    public string ControllerName;

    protected override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var actionDescriptor = filterContext.ActionDescriptor;
        ActionName = actionDescriptor.ActionName;
        ControllerName = actionDescriptor.ControllerDescriptor.ControllerName;
        base.OnActionExecuting(filterContext);
    }
}

为了更好地封装，请使用以下属性：

public class BaseController : Controller
{
    public string ActionName { get; private set; };
    public string ControllerName { get; private set; }

    protected override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var actionDescriptor = filterContext.ActionDescriptor;
        ActionName = actionDescriptor.ActionName;
        ControllerName = actionDescriptor.ControllerDescriptor.ControllerName;
        base.OnActionExecuting(filterContext);
    }
}

---

该死是时候休息一下了。至少可以说很尴尬。今晚不再有复制粘贴错误。我正在办理入住手续…谢谢。该死！！！是时候休息一下了。至少可以说很尴尬。今晚不再有复制粘贴错误。我正在办理入住手续……谢谢。