我有这个课:

public abstract class MyController : Controller
{
  protected override void OnActionExecuting(ActionExecutingContext filterContext)
  {
      string viewPath = filterContext/*... .ViewPath*/;
      viewPath = "Some new View Path";
  }
}


我想检索执行视图的路径并将其替换为另一视图。我尝试调试Web调用上的筛选器上下文,但是没有设法找到要渲染的视图。

我怎么做?

最佳答案

MSDN

Controller.OnActionExecuting Method:在调用action方法之前调用。在此阶段,由于ActionResult尚未执行,因此不存在Action

您最好改用OnResultExecuting

protected override void OnResultExecuting(ResultExecutingContext filterContext)
{
    var viewResult = filterContext.Result as ViewResult;

    if (viewResult != null)
    {
        var razorEngine = viewResult.ViewEngineCollection.OfType<RazorViewEngine>().Single();
        var viewName = !String.IsNullOrEmpty(viewResult.ViewName) ? viewResult.ViewName : filterContext.RouteData.Values["action"].ToString();
        var razorView = razorEngine.FindView(filterContext.Controller.ControllerContext, viewName, viewResult.MasterName, false).View as RazorView;
        var currentPath = razorView.ViewPath;
        var newPath = currentPath.Replace("..", "...");
        viewResult.View = new RazorView(filterContext.Controller.ControllerContext, newPath, razorView.LayoutPath, razorView.RunViewStartPages, razorView.ViewStartFileExtensions);
    }

    base.OnResultExecuting(filterContext);
}

10-06 05:26
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