/// <summary>
/// 添加一个学校
/// </summary>
static void AddSchool()
{
using (EFDomeEntities context = new EFDomeEntities())
{
context.Database.Log = Console.WriteLine;
context.School.Add(
new School {
name = "nf149"
}
);
context.SaveChanges();
}
}
/// <summary>
/// 关闭延迟加载，使用显示加载
/// </summary>
static void ExplicitLoading()
{
using (EFDomeEntities context = new EFDomeEntities())
{
context.Database.Log = Console.WriteLine;
//设置关闭延迟加载
context.Configuration.LazyLoadingEnabled = false;
// 我们去数据库中找Student,里面并没有School对象的信息，也就是School为null
var item = context.Student.FirstOrDefault();
//我们手动去将School 这个对象进行显示加载
context.Entry(item).Reference(s => s.School).Load();
//如果是集合可以使用
//context.Entry(item).Collection(s => s.School).Load();
var school = item.School;
}
}