实体框架种子不工作
本文关键字:工作 种子 框架 实体 | 更新日期: 2023-09-27 17:50:56
我有这个在我的web.config.
<add name="AppDataContext" connectionString="Data Source=(LocalDb)'v11.0;AttachDbFilename=|DataDirectory|'AppDatabase.mdf;Initial Catalog=AppDatabase;Integrated Security=True" providerName="System.Data.SqlClient" />
全球。asax APplication Start
Database.SetInitializer<AppDataContext>(new AppDataContextInitializer());
AppDataContextInitializer.cs
public class AppDataContextInitializer : System.Data.Entity.CreateDatabaseIfNotExists<AppDataContext>
{
protected override void Seed(AppDataContext context)
{
#region Seed Modules
context.ModuleList.Add(new Module() { Id = 1, ModuleName = "Contabilidad", FontAwesomeClass = "ambulance" });
context.ModuleList.Add(new Module() { Id = 2, ModuleName = "Recursos Humanos", FontAwesomeClass = "heartbeat" });
context.ModuleList.Add(new Module() { Id = 3, ModuleName = "Inventario", FontAwesomeClass = "medkit" });
#endregion
base.Seed(context);
}
}
AppDataContext.cs
public class AppDataContext : DbContext
{
public AppDataContext(): base("AppDataContext")
{
}
public DbSet<Module> ModuleList { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
}
和模块。cs
public class Module
{
[Key]
public int Id { get; set; }
public string ModuleName { get; set; }
public string FontAwesomeClass { get; set; }
}
然而,我的数据库没有创建,我错过了什么?
更新1,我在global.asax上添加了这个
AppInitializacionHandler.Initialize();
创建了这个类:
public class AppInitializacionHandler
{
public static void Initialize()
{
Database.SetInitializer(new AppDataContextInitializer()); //if u want to use your initializer
using (var db = new AppDataContext())
{
db.Database.Initialize(true);
}
}
}
,初始化项seed和前面一样
数据库已创建,但未添加行
如果不访问DB,则永远不会调用Initializer。如果您想在应用程序启动时创建DB,请调用Global.asax:
中的Initialize
方法。context.Database.Initialize(true)();
更新1:问题是你在不同的Database
实例中设置初始化器,试试这个:
using (var db = new AppDataContext())
{
db.Database.SetInitializer(new AppDataContextInitializer());
db.Database.Initialize(true);
}
或者在DbContext
构造函数上设置初始化式:
public AppDataContext()
{
Database.SetInitializer(new AppDataContextInitializer());
}