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  • Entity Framework数据库初始化四种策略

    策略一:数据库不存在时重新创建数据库

    Database.SetInitializer<testContext>(new CreateDatabaseIfNotExists<testContext>());


    策略二:每次启动应用程序时创建数据库

    Database.SetInitializer<testContext>(new DropCreateDatabaseAlways<testContext>());


    策略三:模型更改时重新创建数据库

    Database.SetInitializer<testContext>(new DropCreateDatabaseIfModelChanges<testContext>());


    策略四:从不创建数据库

    Database.SetInitializer<testContext>(null);


    Entity Framework数据库初始化示例

    using System.Data.Entity;
    using System.Data.Entity.Infrastructure;
    using Web.Models.Mapping;

    namespace Web.Models
    {
        public class testContext : DbContext
        {
            static testContext()
            {
                Database.SetInitializer<testContext>(null);
            }

            public testContext()
                : base("Name=testContext")
            {
            }

            public DbSet<Person> People { get; set; }

            protected override void OnModelCreating(DbModelBuilder modelBuilder)
            {
                modelBuilder.Configurations.Add(new PersonMap());
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/loadchow/p/6495869.html
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