public string assgin()
{
DateTime da = DateTime.Now;
FileStream fs = new FileStream("dliveryboy.txt", FileMode.Open);
BinaryFormatter f = new BinaryFormatter();
dliveryboy d = new dliveryboy();
while (fs.Position < fs.Length)
{
d = (dliveryboy)f.Deserialize(fs);
if (!d.date1.Contains(da.ToString()))
{
fs.Close();
d.add_date(d.name, da);
return(d.name);
}
else if (!d.date2.Contains(da.ToString()))
{
fs.Close();
d.add_date(d.name, da);
return(d.name);
}
}
return(null);
}
