创建控制台core3.0版

vs里引入

Microsoft.EntityFrameworkCore.Tools
Microsoft.EntityFrameworkCore.Sqlite

 

 

一、逆向工程

 

包管理控制台

Scaffold-DbContext ’Data Source=testDb.db’ Microsoft.EntityFrameworkCore.Sqlite

会自动生成文件

public partial class testDbContext : DbContext
{
public testDbContext()
{
}

public testDbContext(DbContextOptions<testDbContext> options)
: base(options)
{
}

protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
if (!optionsBuilder.IsConfigured)
{
optionsBuilder.UseSqlite("Data Source=testDb.db");
}
}

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
OnModelCreatingPartial(modelBuilder);
}

partial void OnModelCreatingPartial(ModelBuilder modelBuilder);
}

 

 

二、迁移

 ​​https://docs.microsoft.com/zh-cn/ef/core/get-started/index?tabs=visual-studio​