Xamarin ASP mvc 4 操作参数不起作用 [英] Xamarin ASP mvc 4 action with parameters not working

问题描述

我有这些操作:

public class HomeController : Controller
    {
        public ActionResult Index ()
        {
            ViewData ["Message"] = "Welcome to ASP.NET MVC on Mono!";
            return View ();
        }


        public ActionResult Pages (string test)
        {
            ViewBag.Message = test;
            return View ();
        }


    }

页面操作不起作用.我收到错误 500:

The pages action is not working. I get an error 500:

System.TypeLoadException
Could not load type 'System.Web.UnvalidatedRequestValuesBase' from assembly 'System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.

Description: HTTP 500.Error processing request.

Details: Non-web exception. Exception origin (name of application or object): System.Web.Mvc.
Exception stack trace:
at System.Web.Mvc.FormValueProviderFactory.GetValueProvider (System.Web.Mvc.ControllerContext controllerContext) [0x00000] in <filename unknown>:0 at System.Web.Mvc.ValueProviderFactoryCollection.GetValueProvider (System.Web.Mvc.ControllerContext controllerContext) [0x00000] in <filename unknown>:0 at System.Web.Mvc.ControllerBase.get_ValueProvider () [0x00000] in <filename unknown>:0 at System.Web.Mvc.ControllerActionInvoker.GetParameterValue (System.Web.Mvc.ControllerContext controllerContext, System.Web.Mvc.ParameterDescriptor parameterDescriptor) [0x00000] in <filename unknown>:0 at System.Web.Mvc.ControllerActionInvoker.GetParameterValues (System.Web.Mvc.ControllerContext controllerContext, System.Web.Mvc.ActionDescriptor actionDescriptor) [0x00000] in <filename unknown>:0 at System.Web.Mvc.Async.AsyncControllerActionInvoker+<>c__DisplayClass21.<BeginInvokeAction>b__19 (System.AsyncCallback asyncCallback, System.Object asyncState) [0x00000] in <filename unknown>:0 

如果我从该操作中删除参数，则工作正常.

If I remove the parameter from that action is working fine.

有什么想法吗?

提前致谢！

附言我还没有定义任何路线.

p.s. I don't have any routes defined yet.

推荐答案

使用最新的 mono(3.6.1) 无法解决问题.有帮助的是:如果您使用的是 5.X NuGet Microsoft ASP.NET MVC 包，则需要降级到 MVC 4.

1. 卸载以下 NuGet 包(顺序很重要):
   • Microsoft.AspNet.WebPages
   • Microsoft.AspNet.Razor
   • Microsoft.AspNet.Mvc

可能出现的错误:

• 未找到视图索引"或其主视图.
  • 解决方案 - 在 factoryType/Views/Web.Config 中更改 System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc 的版本> host 节点的属性为 4.0.0.0.所以线看起来像这样:

  Errors that may occur:

  • The view 'Index' or its master was not found.
    • Solution - change version of System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc in /Views/Web.Config in factoryType attribute of host node to 4.0.0.0. So line looks like this:

    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

    • System.InvalidOperationException 检测到 ASP.NET 网页版本冲突:指定版本为3.0.0.0"，但 bin 中的版本为2.0.0.0".要继续，请从应用程序的 bin 目录中删除文件或删除 web.config 中的版本规范.
      • 解决方案 - 将根目录/Web.Config 中的 webpages:Version 更改为 2.0.0.0，如下所示:<add key="webpages:Version" value="2.0.0.0"/>
      • System.InvalidOperationException Conflicting versions of ASP.NET Web Pages detected: specified version is "3.0.0.0", but the version in bin is "2.0.0.0". To continue, remove files from the application’s bin directory or remove the version specification in web.config.
        • Solution - change webpages:Version to 2.0.0.0 in Root directory/Web.Config so it looks like this: <add key="webpages:Version" value="2.0.0.0" />

        然后你可以在控制器动作中使用参数.

        Then you can use parameters in controller actions.

        这篇关于Xamarin ASP mvc 4 操作参数不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！