Calculation code for CGST,GST & IGST

Question

Hello Everyone,

 

I am doing one project . I have Quantity,Rate Per Price() and amount

 

Quantity=100.00

 Rate Per Price()=100.00

amount=10000.00

 

 so dynamically i want to display in invoice copy total Amount = 10000.00 @ 5%

 

 

through sql quey i am displaying quanity,rate and amount in the invoice but how can i add that cgst,gst and igst amount in the total amount.

 

Requesting to you please send me the asp.net c# code.