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C# EF将datetime2数据类型转换为datetime数据类型导致值超出范围_C#_Entity Framework_Datetime - Fatal编程技术网

C# EF将datetime2数据类型转换为datetime数据类型导致值超出范围

C# EF将datetime2数据类型转换为datetime数据类型导致值超出范围,c#,entity-framework,datetime,C#,Entity Framework,Datetime,我读到了更多类似的问题,如下 我已经创建了一个BD,但在创建之后,我想添加一个DateTime字段来保存DateTime注册,但是当我键入update database(在创建迁移之后),Package Manager控制台会显示标题错误 我已经试过了: AlterColumn("dbo.Dispositivoes", "RegisterDate", c => c.DateTime(nullable: false, defaultValueSql: "GETDATE()")); Alter

我读到了更多类似的问题,如下

我已经创建了一个BD,但在创建之后,我想添加一个
DateTime
字段来保存DateTime注册,但是当我键入update database(在创建迁移之后),Package Manager控制台会显示标题错误

我已经试过了:

AlterColumn("dbo.Dispositivoes", "RegisterDate", c => c.DateTime(nullable: false, defaultValueSql: "GETDATE()"));
AlterColumn("dbo.Dispositivoes", "RegisterDate", c => c.DateTime(nullable: false, defaultValue: DateTime.Now));

new DataColumn("myDate", typeof(DateTime));
这表明了同样的错误。我没有办法解决这个问题,有什么可以帮我的吗

谢谢

你试过了吗

Sql("alter table dbo.Dispositivoes alter column RegisterDate datetime2 not null default getdate()")

AlterColumn("dbo.Dispositivoes", "RegisterDate", c => c.DateTime(nullable: false, storeType: "datetime2", defaultValueSql: "GETDATE()"));