我是社交控，喜欢分享内容。分享到 腾讯微博时总失败，心想不能就这么算了，要看看异常的细节。

在VS 2012里，我选择 Debug > Debug Installed App Package, 搜索微博，找到腾讯微博。Start

再次共享内容到腾讯微博，随便共享点什么，bingo，ArgumentException 出来了：Value does not fall within the expected range

详细的异常信息如下，希望微博的开发早点解决这个问题：

System.ArgumentException was unhandled

HResult=-2147024809

Message=Value does not fall within the expected range.

Source=mscorlib

StackTrace:

at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)

at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

at MBModern.Share.ShareWritePage.<PageLoaded>d__2.MoveNext()

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>b__0(Object state)

at System.Threading.WinRTSynchronizationContext.Invoker.InvokeCore()

--- End of stack trace from previous location where exception was thrown ---

at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()

at System.Threading.ThreadPoolWorkQueue.Dispatch()

InnerException:

另外 也尝试了用windbg 去调试这个问题，遗憾没有准确捕捉到 共享失败时的异常，可能windbg 异常的配置不合理吧。下边的错误消息能说明一定的问题。

Sat Jun 21 20:15:16.372 2014 (UTC + 8:00): Error: Converter failed to convert value of type 'Windows.Foundation.String' to type 'Uri'; BindingExpression: Path='DataAccount.faceurl' DataItem='MBModern.ListView.ListItemTemplate.DataModel.DataPersonalStatus, MBModern, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'; target element is 'MBModern.Components.PictureView' (Name='HeadIcon'); target property is 'PicUri' (type 'Uri').