public override bool Equals(object obj)
{
if (obj is Order o)
{
return(Orderkey.Equals(o.Orderkey) &&
Custkey.Equals(o.Custkey) &&
Orderstatus.Equals(o.Orderstatus) &&
Totalprice.Equals(o.Totalprice) &&
Orderdate.Equals(o.Orderdate) &&
Orderpriority.Equals(o.Orderpriority) &&
Clerk.Equals(o.Clerk) &&
Shippriority.Equals(o.Shippriority) &&
Comment.Equals(o.Comment));
}
return(false);
}