本文介绍了WebActivatorEx.ActivationManager类型上的错误引发异常....参数计数不匹配的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
安装Microsoft.Owin.*后出现此错误.目标.Net Framework:4.5.2.网络激活器:2.2.0我在另一个项目中具有相同的设置，而且看起来工作正常.请帮助我调试或解决此问题.
I am getting this error after I installed Microsoft.Owin.*.Target .Net Framework:4.5.2. Web Activator: 2.2.0I have the same setup in another project and that seems to work fine.Please help me debug or fix this.
到目前为止，我已经做过了吗:-
Have I have done so far:-
- 更新了所有Nuget软件包
- 已删除的obj文件夹内容
- 运行aspnet_compiler.exe -p C:\ source \ Application \ MyAPI -v any -errorstack.它确实给出了相同的错误，但是在我添加了WebMatrix.data之后就停止了.
完整错误详细信息:-
Stack Trace:
[TargetParameterCountException: Parameter count mismatch.]
System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(Object obj,
BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo
culture) +11403690
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags
invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +54
WebActivatorEx.BaseActivationMethodAttribute.InvokeMethod() +73
WebActivatorEx.ActivationManager.RunActivationMethods(Boolean designerMode)
+637
WebActivatorEx.ActivationManager.Run() +103
[InvalidOperationException: The pre-application start initialization method
Run on type WebActivatorEx.ActivationManager threw an exception with the
following error message: Parameter count mismatch..]
这是package.config:-
Here's the package.config :-
<package id="EntityFramework" version="6.1.3" targetFramework="net452" />
<package id="log4net" version="2.0.8" targetFramework="net452" />
<package id="Microsoft.AspNet.Razor" version="3.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.Client" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.Owin" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebHelpers" version="3.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebPages" version="3.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebPages.Data" version="3.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebPages.WebData" version="3.2.3" targetFramework="net452" />
<package id="Microsoft.Owin" version="3.1.0" targetFramework="net452" />
<package id="Microsoft.Owin.Host.SystemWeb" version="3.1.0" targetFramework="net452" />
<package id="Microsoft.Owin.Security" version="3.1.0" targetFramework="net452" />
<package id="Microsoft.Owin.Security.OAuth" version="3.1.0" targetFramework="net452" />
<package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net452" />
<package id="Newtonsoft.Json" version="10.0.2" targetFramework="net452" />
<package id="Owin" version="1.0" targetFramework="net452" />
<package id="Swashbuckle" version="5.5.3" targetFramework="net452" />
<package id="Swashbuckle.Core" version="5.5.3" targetFramework="net452" />
<package id="WebActivatorEx" version="2.0" targetFramework="net452" />
推荐答案
我发现了问题.大摇大摆的另一个PreApplicationStartMethod引起了该问题.在删除该行之后，一切开始起作用.
I found the issue. there was another PreApplicationStartMethod in swagger that was causing the issue.After I removed that line things started working.
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