private static void AddNewHorseToDisconnectedSamuraiObject()
{
var samurai = _context.Pirates.AsNoTracking().FirstOrDefault(s => s.Id == 23);
samurai.Ship = new Ship {
Name = "Mr. Ed"
};
using (var newContext = new PirateContext())
{
newContext.Attach(samurai);
newContext.SaveChanges();
}
}
private static void ModifyingRelatedDataWhenNotTracked()
{
var samurai = _context.Pirates.Include(s => s.Sayings).FirstOrDefault(s => s.Id == 2);
var quote = samurai.Sayings[0];
quote.Text = "Did you hear that again?";
using (var newContext = new PirateContext())
{
//newContext.Quotes.Update(quote);
newContext.Entry(quote).State = EntityState.Modified;
newContext.SaveChanges();
}
}
private static void AddQuoteToExistingSamuraiNotTracked_Easy(int samuraiId)
{
var quote = new Saying
{
Text = "Now that I saved you, will you feed me dinner again?",
PirateId = samuraiId
};
using (var newContext = new PirateContext())
{
newContext.Sayings.Add(quote);
newContext.SaveChanges();
}
}
private static void AddQuoteToExistingSamuraiNotTracked(int pirateId)
{
var pirate = _context.Pirates.Find(pirateId);
pirate.Sayings.Add(new Saying
{
Text = "Now that I saved you, will you feed me dinner?"
});
using (var newContext = new PirateContext())
{
newContext.Pirates.Attach(pirate);
newContext.SaveChanges();
}
}
public void CanInsertIntoDatabase()
{
var builder = new DbContextOptionsBuilder();
builder.UseInMemoryDatabase("CanInsertPirate");
using (var context = new PirateContext(builder.Options))
{
var pirate = new Pirate();
context.Pirates.Add(pirate);
context.SaveChanges();
Assert.AreNotEqual(0, pirate.Id);
Assert.AreEqual(EntityState.Added, context.Entry(pirate).State);
}
}
