Question

我正在学习EF6，我想和Firebird一起尝试。问题是我的生成器没有创建，只有表格。

public class Product
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int ProductId { get; set; }

    public string Name { get; set; }
    public string Description { get; set; }
    public int MajorVersion { get; set; }
    public string PublicKey { get; set; }
    public string privateKey { get; set; }

    public virtual ICollection<ProductVersion> ProductVersions { get; set; }
}

执行此代码时：

using (LicenseContext licenseContext = new LicenseContext())
    {
        Product p = new Product { Name = "Test" };
        licenseContext.Products.Add(p);
        licenseContext.SaveChanges();
    }

我收到以下错误： An exception occurred while initializing the database. See the InnerException for details.

内部异常为：An error was reported while committing a database transaction but it could not be determined whether the transaction succeeded or failed on the database server

仍在创建数据库，但没有Products表的生成器或触发器。 PrimaryKey已设置。

任何人都可以帮我吗？谢谢！

Answer 1

如果ProductId是主键，则应该向您提供产品实例p.ProductId = 123;

或创建触发器和生成器

SET TERM;

CREATE OR ALTER TRIGGER "Product_BI" FOR "Product"
ACTIVE BEFORE INSERT POSITION 0
AS 
BEGIN 
    new.id = gen_id("sq_Product",1);
END

SET TERM;

COMMIT;

实体框架firebird代码第一个生成器

1 个答案: