ASP.NET MVC3 HttpStatusCodeResult StatusDescription - 指定的参数超出有效值范围

Question

出于某种原因，我在尝试返回时遇到错误
new HttpStatusCodeResult(500, statusDescription);
在我的 MVC3 应用程序中。它因错误而爆炸

Specified argument was out of the range of valid values.
Parameter name: value
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: value

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: value]
   System.Web.HttpResponse.set_StatusDescription(String value) +4877926
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +785441
   System.Web.Mvc.Controller.ExecuteCore() +159
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +335
   System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +62
   System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +20
   System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +54
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +453
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +371


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.372 

如果我将结果更改为返回 new HttpStatusCodeResult(500, "statusDescription");
然后它会正常工作，状态描述是否有某种长度限制？

Answer 1

看源码，or at the documentation , 不能超过 512 个字符。