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随笔档案-2020年08月

MVC 导航属性删除记录报错

2020-08-06 17:43 by 若藜520, 228 阅读, 收藏, 编辑
摘要： MVC 导航属性试图移除某条记录报如下错误 The relationship could not be changed because one or more of the foreign-key properties is non-nullable. When a change is made t 阅读全文