(转载)EF 使用code first模式创建数据库和 填充种子数据

第一篇：来自 .net 开发菜鸟 博主的文章：https://www.cnblogs.com/dotnet261010/p/8035213.html

第二篇：来自 JustYong 博主的文章：https://www.cnblogs.com/JustYong/p/5970683.html

感谢两位博主贡献精彩文章，感谢分享。

自己公司使用的开发框架，每次使用都要手动的把一些公共的数据添加进去，感觉很麻烦，所以就查了一下 “ 如何填充种子数据” ，看了以上的文章，很受益。

在Migrations文件夹下的 数据迁移配置文件  Configuration.cs 下的 Seed（）函数中添加种子数据，代码如下，亲测针对本公司框架使用无误：

namespace ORM.Migrations
{
    using Modules;
    using System;
    using System.Data.Entity;
    using System.Data.Entity.Migrations;
    using System.Linq;

    public sealed class Configuration : DbMigrationsConfiguration<ORM.MyDbContext>
    {
        public Configuration()
        {
            AutomaticMigrationsEnabled = true;
            AutomaticMigrationDataLossAllowed = true;
            ContextKey = "ORM.MyDbContext";
        }

        protected override void Seed(ORM.MyDbContext context)
        {
            //  This method will be called after migrating to the latest version.

            //  You can use the DbSet<T>.AddOrUpdate() helper extension method
            //  to avoid creating duplicate seed data.
            var pId = Guid.NewGuid();
            int orderNumber = ;
            var sysMenuSet = new Menu()
            {
                Id = pId,
                ParentId = null,
                Name = "系统设置",
                Url = null,
                IconClass = null,
                OrderNumber = orderNumber
            };
            var menuSet = new Menu()
            {
                Id = Guid.NewGuid(),
                ParentId = pId,
                Name = "菜单设置",
                Url = "Menu/Index",
                IconClass = null,
                OrderNumber = orderNumber
            };
            var dicitemSet = new Menu()
            {
                Id = Guid.NewGuid(),
                ParentId = pId,
                Name = "字典设置",
                Url = "Dic/Index",
                IconClass = null,
                OrderNumber = orderNumber
            };
            var userSet = new Menu()
            {
                Id = Guid.NewGuid(),
                ParentId = pId,
                Name = "账户设置",
                Url = "User/Index",
                IconClass = null,
                OrderNumber = orderNumber
            };
            var empolyeeSet = new Menu()
            {
                Id = Guid.NewGuid(),
                ParentId = pId,
                Name = "用户管理",
                Url = "Employee/Index",
                IconClass = null,
                OrderNumber = orderNumber
            };
            var roleSet = new Menu()
            {
                Id = Guid.NewGuid(),
                ParentId = pId,
                Name = "角色管理",
                Url = "Role/Index",
                IconClass = null,
                OrderNumber = orderNumber
            };
            var departmentSet = new Menu()
            {
                Id = Guid.NewGuid(),
                ParentId = pId,
                Name = "部门管理",
                Url = "Department/Index",
                IconClass = null,
                OrderNumber = orderNumber
            };
            var tagSet = new Menu()
            {
                Id = Guid.NewGuid(),
                ParentId = pId,
                Name = "标签管理",
                Url = "Tag/Index",
                IconClass = null,
                OrderNumber = orderNumber
            };
            var funcSet = new Menu()
            {
                Id = Guid.NewGuid(),
                ParentId = pId,
                Name = "权限管理",
                Url = "Func/Index",
                IconClass = null,
                OrderNumber = orderNumber
            };
            context.Menus.Add(sysMenuSet);
            context.Menus.Add(menuSet);
            context.Menus.Add(dicitemSet);
            context.Menus.Add(roleSet);
            context.Menus.Add(userSet);
            context.Menus.Add(empolyeeSet);
            context.Menus.Add(departmentSet);
            context.Menus.Add(tagSet);
            context.Menus.Add(funcSet);
            base.Seed(context);
        }
    }
}