public void Test_Entity_Dirty_Attach()
{
Task task = null;
using (var db = new TrackerDataContext { Log = Console.Out })
{
task = db.Task.GetByKey(TaskId);
task.Detach();
}
task.Status = Status.Done;
Assert.IsFalse(task.IsAttached());
// Let's update the task in a seperate DataContext.
using (var db = new TrackerDataContext())
{
db.Log = Console.Out;
var task2 = db.Task.GetByKey(TaskId);
task2.Status = Status.InProgress;
db.SubmitChanges();
}
// Attach the original task and send it to the database.
using (var db = new TrackerDataContext())
{
db.Log = Console.Out;
Assert.IsFalse(task.IsAttached());
db.Task.Attach(task, true);
db.Refresh(RefreshMode.KeepCurrentValues, task);
Assert.IsTrue(task.IsAttached());
db.SubmitChanges();
}
}
