Question

我的日志表中有这个异常，而不是第一次。

System.InvalidOperationException: Sequence contains more than one matching element
     at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
     at System.Web.Helpers.AntiXsrf.ClaimUidExtractor.GetUniqueIdentifierParameters(ClaimsIdentity claimsIdentity, String uniqueClaimTypeIdentifier)
     at System.Web.Helpers.AntiXsrf.ClaimUidExtractor.ExtractClaimUid(IIdentity identity)
     at System.Web.Helpers.AntiXsrf.TokenValidator.GenerateFormToken(HttpContextBase httpContext, IIdentity identity, AntiForgeryToken cookieToken)
     at System.Web.Helpers.AntiXsrf.AntiForgeryWorker.GetFormInputElement(HttpContextBase httpContext)
     at System.Web.Helpers.AntiForgery.GetHtml()
     at System.Web.Mvc.HtmlHelper.AntiForgeryToken()
     at ASP._Page_Views_Account_Signup_cshtml.Execute() in d:\hostingspaces\***\wwwroot\Views\Account\Signup.cshtml:line 23
     at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
     at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
     at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
     at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
     at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
     at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
     at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
     at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass1e.<BeginInvokeAction>b__1b(IAsyncResult asyncResult)
     at System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState)
     at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
     at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
     at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
     at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__4(IAsyncResult asyncResult, ProcessRequestState innerState)
     at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
     at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
     at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

解决问题的唯一线索是关键的“Signup.cshtml：第23行”，在异常中被忽略了。此外，这可能与某种方式的“AntiForgeryToken”有关。

这是第23行：

@Html.AntiForgeryToken()

我试图在我的开发计算机中重现该问题但没有成功。

这个问题是什么意思？你能

吗？

“序列包含多个匹配元素”与AntiForgeryToken（）

0 个答案: