WCF and Silverlight

Question

Actually i am new to this wcf and silverlight. I have developed small project. I wrote wcf using linq.I have some doubts in Exception handling in silverlight. I am getting some errors in WCF. I want to display in Silverlight. WCF should pass SOAP errors to Silverlight and it should display to user. how it si possible.
please help
thanq.

Answer 1

i solved it 

Select Cast(SUM((O_ttotal + P_vatto) * (P_totdis / 100)) As Decimal(9,2)) As TotalDiscount From PRO_BILL

Answer 2

@Abrar that i also know, in this way i get two answers i want the whole total of (A+B+C) not (A+B) and C

Answer 3

HI, when you are using the aggregate sql function then you have to define the group by clause.

like 
cmd = new SqlCommand("Select (SUM(P_ttotal)+SUM(P_vatto)* (P_totdis)/100) as dis  from PRO_BILL group by P_totdis", conn);