nullreferenceexception

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nullreferenceexceptionnullreferenceexception
  1. For example , you may get a NullReferenceException on a line that calls the internal design-time assemblies , which you can 't debug , so you 're left wondering which service failed where .

    例如,您可能在调用内部设计时程序集的行中得到NullReferenceException,而您无法调试该错误,因此您只能纳闷哪个服务在哪个地方失败了。