c# - 找不到方法'Void Newtonsoft.Json.Serialization.DefaultContractResolver.set_IgnoreSerializableAttribute(Boolean)

我下载了 webapi 的示例代码，但出现此异常
我使用 Visual Studio 2012 Ultimate 版本打开了这个示例，并且我安装了最新版本的 newtonsoft。当我运行这个应用程序时出现这个错误。它编译成功。
知道为什么会出现此错误以及有没有办法解决此异常。

System.MissingMethodException was unhandled by user code
  HResult=-2146233069
  Message=Method not found: 'Void Newtonsoft.Json.Serialization.DefaultContractResolver.set_IgnoreSerializableAttribute(Boolean)'.
  Source=System.Net.Http.Formatting
  StackTrace:
       at System.Net.Http.Formatting.JsonContractResolver..ctor(MediaTypeFormatter formatter)
       at System.Net.Http.Formatting.JsonMediaTypeFormatter..ctor()
       at System.Net.Http.Formatting.MediaTypeFormatterCollection.CreateDefaultFormatters()
       at System.Net.Http.Formatting.MediaTypeFormatterCollection..ctor()
       at System.Web.Http.HttpConfiguration.DefaultFormatters()
       at System.Web.Http.HttpConfiguration..ctor(HttpRouteCollection routes)
       at System.Web.Http.GlobalConfiguration.<.cctor>b__0()
       at System.Lazy`1.CreateValue()
       at System.Lazy`1.LazyInitValue()
       at System.Lazy`1.get_Value()
       at System.Web.Http.GlobalConfiguration.get_Configuration()
       at System.Web.Http.RouteCollectionExtensions.MapHttpRoute(RouteCollection routes, String name, String routeTemplate, Object defaults, Object constraints, HttpMessageHandler handler)
       at System.Web.Http.RouteCollectionExtensions.MapHttpRoute(RouteCollection routes, String name, String routeTemplate, Object defaults)
       at WebAPIRc.RouteConfig.RegisterRoutes(RouteCollection routes) in c:\Users\viemon\Downloads\WebAPIRc\WebAPIRc\WebAPIRc\App_Start\RouteConfig.cs:line 17
       at WebAPIRc.WebApiApplication.Application_Start() in c:\Users\viemon\Downloads\WebAPIRc\WebAPIRc\WebAPIRc\Global.asax.cs:line 36
  InnerException:

这是失败的代码

public class RouteConfig
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
          //Exception error start
            routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );
          //exception error end

            routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
            );
        }
    }

我开始知道我需要为 NuGet from this post 打开“包括预发布”，
但是如何打开 NuGet 的“包含售前赛”？

最佳答案

要使用 "Include Prerelease" 安装 Json.NET，请在 the Package Manager Console 中运行以下命令

Install-Package Newtonsoft.Json –IncludePrerelease

关于c# - 找不到方法'Void Newtonsoft.Json.Serialization.DefaultContractResolver.set_IgnoreSerializableAttribute(Boolean)，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/16756336/