【发布时间】：2016-06-01 01:36:38
【问题描述】：
我有一个托管在 IIS7 中的 WCF 服务，该服务只是另一个服务的包装器，所以它调用实际服务然后返回一个响应，然后将其传递给客户端。我遇到的问题是我发送一个请求并返回数据，当我用第二个请求发送另一个请求时，我收到以下错误：请您在这里分享一下可能存在的问题。
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<title>Specified argument was out of the range of valid values.<br>Parameter name: value</title>
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<span><H1>Server Error in '/VendorSelfCarewebapi' Application.<hr width=100% size=1 color=silver></H1>
<h2> <i>Specified argument was out of the range of valid values.<br>Parameter name: value</i> </h2></span>
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<b> Description: </b> 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.
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<b> Exception Details: </b>System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.<br>Parameter name: value<br><br>
<b>Source Error:</b> <br><br>
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<code>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.</code>
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<b>Stack Trace:</b> <br><br>
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<code><pre>
[ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: value]
System.Web.HttpResponse.set_StatusDescription(String value) +3165151
System.Web.HttpResponseWrapper.set_StatusDescription(String value) +9
System.Web.Http.WebHost.HttpControllerHandler.CopyResponseStatusAndHeaders(HttpContextBase httpContextBase, HttpResponseMessage response) +53
System.Web.Http.WebHost.<ConvertResponse>d__6.MoveNext() +96
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
System.Web.Http.WebHost.<ProcessRequestAsyncCore>d__0.MoveNext() +381
System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
System.Web.TaskAsyncHelper.EndTask(IAsyncResult ar) +60
System.Web.HttpTaskAsyncHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +6
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9651516
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
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<b>Version Information:</b> Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34274
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[ArgumentOutOfRangeException]: Specified argument was out of the range of valid values.
Parameter name: value
at System.Web.HttpResponse.set_StatusDescription(String value)
at System.Web.HttpResponseWrapper.set_StatusDescription(String value)
at System.Web.Http.WebHost.HttpControllerHandler.CopyResponseStatusAndHeaders(HttpContextBase httpContextBase, HttpResponseMessage response)
at System.Web.Http.WebHost.HttpControllerHandler.<ConvertResponse>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Http.WebHost.HttpControllerHandler.<ProcessRequestAsyncCore>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.TaskAsyncHelper.EndTask(IAsyncResult ar)
at System.Web.HttpTaskAsyncHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
【问题讨论】：
-
不要粘贴错误页面的内容，而是发布生成异常的代码。尝试调试您的代码，添加异常处理以记录任何异常。由于调用堆栈包含
TaskAwaiter，因此很可能在没有异常处理程序的异步方法中发生错误