private static void Update_5()
{
using (var context = new UefaDbContext())
{
Console.WriteLine("Update_5 Update properties");
var teamToUpdate = new Team()
{
Id = 1
};
context.Attach(teamToUpdate);
teamToUpdate.Name = "Shahtar (Updated_5)";
var country2 = new Country()
{
Id = 2
};
context.Attach(country2);
teamToUpdate.Country = country2;
context.SaveChanges();
}
}
private static void Update_3()
{
using (var context = new UefaDbContext())
{
Console.WriteLine("Update_3 Explicit property modified");
var teamToUpdate = new Team()
{
Id = 1,
Country = context.Countries.Find(1),
Name = "Shahtar (Updated_3)"
};
context.Attach(teamToUpdate);
context.Entry(teamToUpdate).Property(t => t.Name).IsModified = true;
context.SaveChanges();
}
}
private static void Update_4()
{
using (var context = new UefaDbContext())
{
Console.WriteLine("Update_4 Update properties");
var teamToUpdate = new Team()
{
Id = 1
};
context.Attach(teamToUpdate);
teamToUpdate.Name = "Shahtar (Updated_4)";
// Cannot insert explicit value for identity column in table 'Countries' when
// IDENTITY_INSERT is set to OFF.
var country2 = new Country()
{
Id = 2
};
teamToUpdate.Country = country2;
context.SaveChanges();
}
}