c# - 如何停止 MVC5 RenderAction 寻找 .aspx 文件

Question

我将 MVC 添加到我现有的 webforms 项目中。除了 RenderAction 正在寻找 .aspx 文件之外，一切都很顺利

The view '_Mainmenu.cshtml' or its master was not found or no view engine supports the searched locations. The following locations were searched:

~/Areas/NewPages/Views/Shared/_Mainmenu.cshtml.ascx

观点是

~/Areas/NewPages/Views/Shared/_Mainmenu.cshtml

它确实存在于该文件夹中。谁能帮我解决这个问题。
MVC 一切正常，我什至让 PITA EntityFramework 也能正常工作

任何帮助，将不胜感激

Answer 1

The view '[viewname]' or its master was not found or no view engine support the searched Locations 表示您使用的是默认 View 引擎，它优先考虑 Web 表单 View 引擎(显示为 ~/Areas/NewPages/Views/Shared/_Mainmenu.cshtml.ascx 的路径表示 MVC View 引擎优先搜索 ASPX 和 ASCX 文件而不是 Razor cshtml 文件)。要更改 MVC 默认使用 Razor View 引擎的这种行为，请将这些行插入 Application_Start方法在 Global.asax :

ViewEngines.Engines.Clear();
ViewEngines.Engines.Add(new RazorViewEngine());
// ViewEngines.Engines.Add(new WebFormViewEngine()); => optional webforms engine registration

此外，如果默认的 Razor View 引擎仍然无法正确识别区域中的 cshtml 文件，则需要创建一个自定义的 View 引擎类，该类继承 RazorViewEngine和设置 AreaViewLocationFormats在它的构造函数中是这样的:

public class CustomViewEngine : RazorViewEngine
{
    public CustomViewEngine()
    {
        // Route parsing convention for view engines:
        // {0} means action method name
        // {1} means controller class name
        // {2} means area name

        AreaMasterLocationFormats = new[] 
        {
            "~/Areas/{2}/Views/Shared/{0}.cshtml"
        };

        AreaViewLocationFormats = new[] 
        {
            "~/Areas/{2}/Views/{1}/{0}.cshtml",

            // other view search locations here
        };

        AreaPartialViewLocationFormats = AreaViewLocationFormats;
    }
}

请注意，自定义 View 引擎将根据 AreaViewLocationFormats 中定义的路由在 Controller 操作方法指定的区域内搜索所有 View 页面。 .

然后，在与 RazorViewEngine相同的地方注册自定义 View 引擎类。 ，即在 Global.asax :

protected void Application_Start()
{
    AreaRegistration.RegisterAllAreas();

    // clear all view engines repository first
    ViewEngines.Engines.Clear();

    // register Razor view engine only
    ViewEngines.Engines.Add(new RazorViewEngine());

    // register custom view engine class here
    ViewEngines.Engines.Add(new CustomViewEngine());

    // other initialization codes here
}

类似问题:

ASP.NET MVC: When should I create custom View Engine

How do I implement a custom RazorViewEngine to find views in non-standard locations?