解决方法
您是否为每个类创建单独的上下文?
public class Employee { [Key] public int EmpId { get; set; } // < Can I make a suggestion here // and suggest you use Id rather than // EmpId? It looks better referring to // employee.Id rather than employee.EmpId [required] public string Fullname { get; set; } ... } public class AnotherClass { ... }
然后在上下文中列出所有模型:
public MyDbContext : DbContext { public DbSet<Employee> Employees { get; set; } public DbSet<AnotherClass> AnotherClasses { get; set; } }
您可能还希望使用Context中的构造函数指定连接字符串名称:
public MyDbContext() : base("ConnectionString") { }
所有模型都在同一个环境中运行非常重要.
使用上下文
var context = new MyDbContext(); var employees = context.employees.ToList(); // I prefer storing the data as an IList