我在實體框架中使用代碼第一種方法,但我無法將默認數據播種到表中。請幫忙。實體框架代碼首先播種數據
模型
public class Employee
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Gender { get; set; }
public int Salary { get; set; }
public virtual Department Departments { get; set; }
}
public class Department
{
public int Id { get; set; }
public string Name { get; set; }
public string Location { get; set; }
public virtual ICollection<Employee> Employees { get; set; }
public Department()
{
this.Employees = new List<Employee>();
}
}
初始化程序
public class DepartmentInitializer : DropCreateDatabaseIfModelChanges<EmployeeDBContext>
{
protected override void Seed(EmployeeDBContext context)
{
IList<Department> lst = new List<Department>
{
new Department
{
Name = "Developer",
Location = "Bangalore"
},
new Department
{
Name = "Tester",
Location = "Bangalore"
},
new Department
{
Name = "IT Services",
Location = "Chennai"
}
};
foreach (var item in lst)
{
context.Departments.Add(item);
}
context.SaveChanges();
}
}
主要應用
class Program
{
static void Main(string[] args)
{
using (var db = new EmployeeDBContext())
{
Database.SetInitializer<EmployeeDBContext>(new DepartmentInitializer());
}
}
}
您使用的是哪種版本的EF?播種已經改變了不同的版本。 – WillC
EF版本6.1.3 –