public int CompareTo(object obj)
{
CTariff trf = obj as CTariff;
if (trf != null)
{
if (this.Time > trf.mdtime)
{
return(1);
}
else if (this.Time < trf.mdtime)
{
return(-1);
}
else
{
return(0);
}
}
else
{
throw new ArgumentException("obj is not a CTariff object");
}
}