因为这个原因,我刚刚注册了一个账户。
我在Visual Studio上创建了一个空的Web项目(没有MVC、Forms或Web API),在调试时遇到了这行代码:
@if (Session["GenCpN"] != null) { @Session["GenCpN"] }
在我的default.cshtml中,当我运行_GenLayout.cshtml布局文件时,遇到了以下异常:
Microsoft.CSharp.RuntimeBinder.RuntimeBinderException was unhandled by user code
HResult=-2146233088
Message=Cannot perform runtime binding on a null reference
Source=Anonymously Hosted DynamicMethods Assembly
StackTrace:
at CallSite.Target(Closure , CallSite , Object , String , Object )
at System.Dynamic.UpdateDelegates.UpdateAndExecute3[T0,T1,T2,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2)
at CallSite.Target(Closure , CallSite , Object , String , Object )
at System.Dynamic.UpdateDelegates.UpdateAndExecute3[T0,T1,T2,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2)
at ASP._Page__GenLayout_cshtml.Execute() in C:\Users\PJ\OneDrive\Documents\Dev\BWC\WebApp\_GenLayout.cshtml:line 7
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
at System.Web.WebPages.WebPage.ExecutePageHierarchy(IEnumerable`1 executors)
at System.Web.WebPages.WebPage.ExecutePageHierarchy()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer)
at System.Web.WebPages.WebPageBase.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer)
at System.Web.WebPages.HelperResult.WriteTo(TextWriter writer)
at System.Web.WebPages.WebPageExecutingBase.WriteTo(TextWriter writer, HelperResult content)
at System.Web.WebPages.WebPageBase.Write(HelperResult result)
at System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body)
at System.Web.WebPages.WebPageBase.PopContext()
at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
at System.Web.WebPages.WebPageHttpHandler.ProcessRequestInternal(HttpContextBase httpContext)
InnerException:
顺便提一下,如果有帮助的话,当我每个语句都使用一行时,Visual Studio会在闭合括号处中断。此外,我记得我的代码以前可以工作 - 在其他更改中 - 我在子文件夹的子文件夹中添加了一个新的web.config文件(以添加处理程序)。我已经删除了该文件,但仍然无法工作。
我想这需要由专业人士回答,但我感谢任何答案,
谢谢!
更新1:我已经还原了几个更改并删除了几个文件,但我仍然在这个文件中遇到这个错误。我还删除并重新编写了default.cshtml和_GenLayout.cshtml,但仍然没有收到任何消息。这对解决方案产生了不可见的影响。我发现了一个错误吗?
更新2:事实证明,一旦我删除引用自定义类的后续行,问题就会消失,但我仍然无法理解为什么会出现特定的错误。我要删除的行是:
<link rel="stylesheet" type="text/css" href="@App.uri("arg1", "arg2")" />
@{ Layout = "~/_GenLayout.cshtml"; }
。 - fpsychias@if (Session["GenCpN"] != null) { @Session["GenCpN"] }
- fpsychias