Migrations are enabled by default in EF Core. They are managed by executing commands. If you have Visual Studio, you can use the Package Manager Console (PMC) to manage migrations. Alternatively, you can use a command line tool to execute Entity Framework CLI commands to create a migration....
Commands 命令模式使用分为两种情况,一种是在Visual Studio中的命令提示符窗口,一种是直接在windows下cmd命令窗口中。但是不管哪种情况,都必须先做以下前提: 目前版本中若要使用命令,必须首先手动修改project.json文件,添加 Microsoft.EntityFrameworkCore.Tools和Microsoft.EntityFrameworkCore.Design到project.json文件中去,...
TheAdd Migrationcommand is one of the 3 main migration commands: Add Migration Update Database Remove Migration How to use the Add Migration command with PMC in EF Core? To use theAdd-Migrationcommand with the Package Manager Console (PMC) in EF Core: ...
Source: IMigrationCommandExecutor.cs Executes the given commands using the given database connection. C# Copy public void ExecuteNonQuery (System.Collections.Generic.IEnumerable<Microsoft.EntityFrameworkCore.Migrations.MigrationCommand> migrationCommands, Microsoft.EntityFrameworkCore.Storage.IR...
附:可以使用Visual Studio中的程序包管理器控制台执行Entity Framework Core中的迁移命令。 PMC CommandUsageGet-Help entityframework显示有关实体框架命令的信息。Add-migraion <migration name>通过添加迁移快照来创建迁移。Remove-Migration删除最后一个迁移快照。Update-Database根据上一个迁移快照更新数据库架构。Script...
Microsoft.EntityFrameworkCore.Database.Command[20101] Executed DbCommand (1ms) [Parameters=[], CommandType='Text', CommandTimeout='30'] INSERT INTO `__EFMigrationsHistory` (`MigrationId`, `ProductVersion`) VALUES ('20240421145002_CreateStudent', '8.0.4'); Done. PM> 以上执行已经全部体现到...
Entity Framework Core的自动迁移实现比较复杂,我们需要分两步走。 第一步 创建迁移记录__ZKWeb_MigrationHistory表,这个表和EF自带的结构相同,但这个表是给自己用的不是给ef命令用的 第二部 查找最后一条迁移记录,和当前的结构进行对比,找出差异并更新数据库 ...
migrationCommands, IRelationalConnection connection) at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration) at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.UpdateDatabase(String targetMigration, String contextType) at Microsoft.EntityFrameworkCore.Design....
Framework 6, but using ASP.NET Core 1.0 on non-Windows platforms, using Entity Framework with the Universal Windows Platform, and using nonrelational data stores all require the use of Entity Framework Core 1.0. This chapter introduces you to Entity Framework Core 1.0. It starts with a simple...
dotnet add package Microsoft.EntityFrameworkCore.SqlServer Installing the EF8 Command Line Interface (CLI) The dotnet-ef tool must be installed before executing EF8 Core migration or scaffolding commands. To install the tool globally, use: Copy dotnet tool install --global dotnet-ef If you already...