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一、新建一个文件:appsettings.json 二、很重要。将appsettings.json,变成可复制。第三步公共文件会报错。 三、增加公共文件 public class Appsettings { static IConfiguration Configuration { get; set 阅读全文
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搭建 新搭建好的EF,当你运行程序时报: The model backing the 'SqlServerDbContext' context has changed since the database was created. Consider using Code First Migratio 阅读全文
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--删除重复数据 --(重复全备份) select att.* into RnsAttachmentsDeleteAllBack0810 from RnsAttachments att inner join (select t.ForeignId,t.ProjectForeignId from Rn 阅读全文