我更新数据时如何解决此错误. [英] How to solve this error when i Update the data.

问题描述

要刷新的对象集合中索引0处的元素的EntityKey属性值为空，或者未附加到此ObjectStateManager.

The element at index 0 in the collection of objects to refresh has a null EntityKey property value or is not attached to this ObjectStateManager.

推荐答案

EntityKey和ObjectStateManager听起来像Entity Framework，但是我没有看到该错误，没有源代码也不会造成猜测，但是google您的问题会产生大量讨论该错误消息的结果.
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EntityKey and ObjectStateManager sounds like Entity Framework, well I''ve not seen that error and won''t hazard a guess without source code but google your question yields alot of results discussing that error message.
Google[^]

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