String was not recognized as a valid DateTime.Description:An unhandled exception occurred during 我不懂这是什么?

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String was not recognized as a valid DateTime.Description:An unhandled exception occurred during 我不懂这是什么?
String was not recognized as a valid DateTime.Description:An unhandled exception occurred during
我不懂这是什么?

String was not recognized as a valid DateTime.Description:An unhandled exception occurred during 我不懂这是什么?
字符没被认出是合法的日期时间.你的日期时间字段有问题.可能格式不是规定的格式,也可能比如出来一个13月40日这种日期.