Nullable object must have a value. System.InvalidOperationException: Nullable object must have a value.

其他 2020-07-24 17:25:10 阅读次数: 0

错误：

背景，查询的时候出现这个异常

原因是：将一个null值赋给了一个不能为空的字段

解决：

第一种，当有空值的时候，给一个默认值

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第二种，将有空值的重新赋值

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转载自www.cnblogs.com/sugarwxx/p/13373051.html

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