/// <summary>
/// EF在修改一个数据，通过主键来修改
/// </summary>
public void TestEFeditor()
{
var db = new GGN_NewsEntities();
var game = new TGame {
Id = 1, Name = "天天跑酷", State = true
};
db.TGame.Add(game);
Console.WriteLine(db.SaveChanges());
}
public void TestEFDelete()
{
var db = new GGN_NewsEntities();
var game = new TGame {
Id = 2
};
db.TGame.Attach(game);
db.TGame.Remove(game);
Console.WriteLine(db.SaveChanges());
}
public void TestEFAdd()
{
var db = new GGN_NewsEntities();
var game = new TGame
{
Name = "水果忍者",
State = true
};
db.TGame.Add(game);
Console.WriteLine(db.SaveChanges());
}
public void TestEFEditorOther()
{
//将对象加入ef容器，并获取当前ef 实体对象的 状态管理对象
var db = new GGN_NewsEntities();
//db.TGame.MergeOption = MergeOption.NoTracking;
var game = new TGame
{
Id = 1,
Name = "水果忍者修改",
State = false
};
//将对象加入 EF容器，并获取 当前实体对象 的 状态管理对象。单纯的使用Attach对象不能够获取ef 的状态管理对象
var entry = db.Entry(game);
//设置 该对象 为未被修改过
entry.State = EntityState.Unchanged;
//设置 该对象 为修改过
entry.Property("Name").IsModified = true;
Console.WriteLine(db.SaveChanges());
}