stoneniqiu / portal.mvc Goto Github PK

Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. See http://go.microsoft.com/fwlink/?LinkId=472540 for information on understanding and handling optimistic concurrency exceptions.
{"Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. See http://go.microsoft.com/fwlink/?LinkId=472540 for information on understanding and handling optimistic concurrency exceptions."}

错误 CS0246 未能找到类型或命名空间名“ValidataType”(是否缺少 using 指令或程序集引用?) Niqiu.Core ..\Portal.MVC\Niqiu.Core\Helpers\CommonHelper.cs 22 活动

将此段代码注释掉，继续编译，提示：
未能加载文件或程序集“NuGet.Core, Version=1.6.30117.9648, Culture=neutral, PublicKeyToken=31bf3856ad364e35”或它的某一个依赖项。系统找不到指定的文件

百度下没有找到解决方案，请怎么解决？十分感谢！