public void EF6_Delete_Single_SaveChanges(object sender, bool showResult)
{
My.Database.Reset(My.AppSettings.NbTestItems, false, false);
var affectedRows = 0;
var clock = new Stopwatch();
List <EntitiesContextEF6.Invoice> list;
using (var context = new EntitiesContextEF6())
{
list = context.Invoices.ToList();
}
clock.Start();
for (var i = 0; i < My.AppSettings.NbTestItems; i++)
{
using (var context = new EntitiesContextEF6())
{
context.Invoices.Attach(list[i]);
context.Invoices.Remove(list[i]);
affectedRows += context.SaveChanges();
}
}
clock.Stop();
if (showResult)
{
My.Result.Show(this, sender, clock, affectedRows);
}
}
private void EF6_Delete_Many_SaveChanges_Bad(object sender, bool showResult)
{
My.Database.Reset(My.AppSettings.NbTestItems, false, false);
var clock = new Stopwatch();
var affectedRows = 0;
using (var context = new EntitiesContextEF6())
{
var list = context.Invoices.Take(My.AppSettings.NbTestItems).ToList();
clock.Start();
for (int i = 0; i < My.AppSettings.NbTestItems; i++)
{
context.Invoices.Remove(list[i]);
affectedRows += context.SaveChanges();
}
clock.Stop();
}
if (showResult)
{
My.Result.Show(this, sender, clock, My.AppSettings.NbTestItems);
}
}
private void EF6_Delete_Many_SaveChanges_Good(object sender, bool showResult)
{
My.Database.Reset(My.AppSettings.NbTestItems, false, false);
var clock = new Stopwatch();
var affectedRows = 0;
using (var context = new EntitiesContextEF6())
{
context.Invoices.RemoveRange(context.Invoices.Take(My.AppSettings.NbTestItems));
clock.Start();
affectedRows = context.SaveChanges();
clock.Stop();
}
if (showResult)
{
My.Result.Show(this, sender, clock, My.AppSettings.NbTestItems);
}
}