C# EntityFramework Npgsql数据库配置不支持';行不通
我正在尝试先用带有代码的Npgsql配置EntityFrameworkC# EntityFramework Npgsql数据库配置不支持';行不通,c#,entity-framework,ef-code-first,npgsql,entity-framework-migrations,C#,Entity Framework,Ef Code First,Npgsql,Entity Framework Migrations,我正在尝试先用带有代码的Npgsql配置EntityFramework 实体框架6.1.3 Npgsql 3.0.5 现在,我想通过一个类设置一个自定义配置,让我们看看: public class DbConfig : DbConfiguration { public DbConfig() { SetProviderFactory("Npgsql", Npgsql.NpgsqlFactory.Instance); SetProviderServ
- 实体框架6.1.3
- Npgsql 3.0.5
public class DbConfig : DbConfiguration
{
public DbConfig()
{
SetProviderFactory("Npgsql", Npgsql.NpgsqlFactory.Instance);
SetProviderServices("Npgsql", provider: NpgsqlServices.Instance);
SetDefaultConnectionFactory(new NpgsqlConnectionFactory());
}
}
和我的上下文类:
[DbConfigurationType(typeof(DbConfig))]
public class Db: DbContext
{
public virtual DbSet<Products> Products {get;set;}
public Db(DbConnection Connection): base(Connection, true)
{
}
public Db(): base()
{
}
public Db(string connectionString): base(connectionString)
{
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Conventions.Remove<OneToManyCascadeDeleteConvention>();
modelBuilder.Conventions.Add<CascadeDeleteAttributeConvention>();
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
modelBuilder.HasDefaultSchema("public");
base.OnModelCreating(modelBuilder);
}
}
但我有一些例外:
- EntityFramework.dll中出现“System.Data.Entity.Core.ProviderIncompatibleException”。内部异常:{“提供程序未返回ProviderManifestToken字符串。”}
class Program
{
static void Main(string[] args)
{
Db.ConfigureMigrations();
string connectionString = "Server=localhost;Port=5432;Database=stockDb;User Id=postgres;Password=123456;";
using (var C = new Db(connectionString))
{
var productos = C.Productos.Count();
Console.WriteLine(productos);
}
Console.WriteLine("listo");
Console.ReadKey();
}
}