How can I calculate margin requirement for option spread strategy? Pls help me.

@asksameer I am calling sdk in c# desktop application (UWP App)

@redmouseindia
Fixed.

Modified code as mentioned below:
orderid and triggerprice properties of OrderInfo class returns NULL, So I created a new class named PlaceOrderInfo class removing orderid, triggerprice, stoploss and squareoff properties. Also I have mentioned Quantity as 75 instead of 1.

Thank you.

@admin Its a market order, so i have mentioned price as ZERO

I tried to place order using c# library but got
internal error code: AB2001, status: false, data: null.

below is my code:

        OrderInfo sord = new OrderInfo();

        sord.variety = Constants.VARIETY_NORMAL;
        sord.tradingsymbol = "NIFTY08JUL2115900CE";
        sord.symboltoken = "39504";
        sord.transactiontype = Constants.TRANSACTION_TYPE_BUY;
        sord.exchange = Constants.EXCHANGE_NFO;
        sord.ordertype = Constants.ORDER_TYPE_MARKET;
        sord.producttype = Constants.PRODUCT_TYPE_CARRYFORWARD;
        sord.duration = Constants.VALIDITY_DAY;
        sord.price = "0";
        sord.squareoff = "0";
        sord.stoploss = "0";
        sord.quantity = "1";

       obj = connect.placeOrder(sord);
        OrderResponse sOres = obj.PlaceOrderResponse;

please correct me if anything wrong