static void Main(string[] args)
{
using (sqltodayEntities ctx = new sqltodayEntities())
{
ctx.viewctx();
ctx.Database.Log = Console.WriteLine;
QEMP newemp = new QEMP()
{
DEPTNAME = "Books", EMPFNAME = "Carol", EMPSALARY = 25000, BOSSNO = 3, EMPNO = ctx.QEMPs.Max(x => x.EMPNO) + 1
};
ctx.viewctx();
QEMP stub = new QEMP()
{
EMPNO = 13
};
var s = ctx.Entry(stub);
// s.State = System.Data.Entity.EntityState.Deleted;
Console.WriteLine("Here i am");
s.viewentry();
Console.WriteLine("There I was");
ctx.viewctx();
var L = ctx.QEMPs.ToList();
ctx.QEMPs.Add(newemp);
ctx.viewctx();
}
}
static public void viewctx(this sqltodayEntities ctx)
{
Console.WriteLine("******Context Tracing View **********");
Console.WriteLine($"Entry Count: {ctx.ChangeTracker.Entries().Count()}");
foreach (var e in ctx.ChangeTracker.Entries())
{
Console.Write($"entry:{e.State,-11} [");
switch (e.State)
{
default:
Console.Write($" Invalid State for this entry ");
break;
case (System.Data.Entity.EntityState.Detached):
Console.Write($" Not Tracking Properties for detached entry ");
break;
case (System.Data.Entity.EntityState.Modified):
foreach (var c in e.OriginalValues.PropertyNames)
{
Console.Write($"{c}:{e.OriginalValues[c]}->{e.CurrentValues[c]} ");
}
break;
case (System.Data.Entity.EntityState.Unchanged):
foreach (var c in e.OriginalValues.PropertyNames)
{
Console.Write($"{c}:{e.OriginalValues[c]} ");
}
break;
case (System.Data.Entity.EntityState.Added):
foreach (var c in e.CurrentValues.PropertyNames)
{
Console.Write($"{c}:NA->{e.CurrentValues[c]} ");
}
break;
case (System.Data.Entity.EntityState.Deleted):
foreach (var c in e.OriginalValues.PropertyNames)
{
Console.Write($"{c}:{e.OriginalValues[c]}->NA ");
}
break;
}
Console.WriteLine($"]");
}
Console.WriteLine("-------------------------------------");
}
