//添加单个Donator
public static void CreateSingleDonator()
{
using (var context = new Context())
//Context的实例用了using语句包装起来，这是因为DbContext实现了IDisposable接口。Dbcontext还包含了DbConnection的实例，该实例指向了具有特定连接字符串的数据库。在EF中合适地释放数据库连接和ADO.NET中同等重要
{
context.Database.CreateIfNotExists(); //如果数据库不存在则创建
Donator donators = new Donator()
{
Name = "单个", Amount = 50, DonateDate = new DateTime(2016, 4, 7)
};
context.Donators.Add(donators);
context.SaveChanges();
}
}
//一对多关系， 自定义配置链接
public static void OneToManyCustom()
{
using (var context = new Context())
{
var donator = new Donator
{
Amount = 6,
Name = "一对多时，添加的捐赠者",
DonateDate = DateTime.Parse("2016-7-6")
};
donator.PayWays.Add(new PayWay {
Name = "支付宝"
});
donator.PayWays.Add(new PayWay {
Name = "微信"
});
context.Donators.Add(donator);
context.SaveChanges();
}
}
