EntityFrameworkCore概览

.NET Core 中 EntityFrameworkCore的支持库主要有：

Script-migration

级联删除

 protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder.UseSqlServer("Data Source=10.10.10.237;Initial Catalog=DEV_RLS;User ID=DEV_User;Password=Devuser2020;");
        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            modelBuilder.Entity<Sheet>().HasOne<UserOrg>(s=>s.UserOrg).WithMany().OnDelete(DeleteBehavior.Restrict);

        }

根据数据库生成模型

Scaffold-DbContext -Force "Data Source=.;Initial Catalog=Test;User Id =sa;Password=sa;" Microsoft.EntityFrameworkCore.SqlServer -OutputDir Models/Test  -UseDatabaseName

https://www.learnentityframeworkcore.com/configuration/fluent-api/ondelete-method

https://docs.microsoft.com/en-us/ef/core/miscellaneous/cli/powershell