public int IndexOf(T value)
{
var index = -1;
var found = false;
foreach (var item in items)
{
index++;
if (item.Equals(value))
{
found = true;
break;
}
var args = new CancelableListIterationArgs(index);
OnIterate(this, args);
if (args.Cancel)
{
break;
}
Thread.Sleep(300); // intentioanlly impose a delay
}
if (found)
{
return(index);
}
else
{
return(-1);
}
}
static void OnIterate(object sender, CancelableListIterationArgs e)
{
Console.Write(" .");
if (e.Index > 10)
{
Console.WriteLine("\nOperation was canceled at iteration {0}", e.Index);
e.Cancel = true;
}
}