确实.NET MVC有一个强类型RedirectToAction？ [英] Does .NET MVC have a strongly typed RedirectToAction?

问题描述

既然我已经决定让同时与测试呆现在RC走了，我不知道是否强类型 RedirectToAction 已添加的方式。有没有人尝试过​​了，有一个强类型 RedirectToAction （也许 ActionLink的）的RC？

Since I have decided to let RC go while staying with Beta for now, I have no way of knowing whether a strongly typed RedirectToAction has been added. Has anybody tried it and is there a strongly typed RedirectToAction (and maybe ActionLink) in RC?

推荐答案

没有，没有。

protected RedirectToRouteResult RedirectToAction<T>(Expression<Action<T>> action, RouteValueDictionary values) where T : Controller
{
    var body = action.Body as MethodCallExpression;

    if (body == null)
    {
        throw new ArgumentException("Expression must be a method call.");
    }

    if (body.Object != action.Parameters[0])
    {
        throw new ArgumentException("Method call must target lambda argument.");
    }

    string actionName = body.Method.Name;

    var attributes = body.Method.GetCustomAttributes(typeof(ActionNameAttribute), false);
    if (attributes.Length > 0)
    {
        var actionNameAttr = (ActionNameAttribute)attributes[0];
        actionName = actionNameAttr.Name;
    }

    string controllerName = typeof(T).Name;

    if (controllerName.EndsWith("Controller", StringComparison.OrdinalIgnoreCase))
    {
        controllerName = controllerName.Remove(controllerName.Length - 10, 10);
    }

    RouteValueDictionary defaults = LinkBuilder.BuildParameterValuesFromExpression(body) ?? new RouteValueDictionary();

    values = values ?? new RouteValueDictionary();
    values.Add("controller", controllerName);
    values.Add("action", actionName);

    if (defaults != null)
    {
        foreach (var pair in defaults.Where(p => p.Value != null))
        {
            values.Add(pair.Key, pair.Value);
        }
    }

    return new RedirectToRouteResult(values);
}

这应该工作。

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