How to get the price at which Market orders are executed

Hi,

I am using C# for application .
Suppose I place an order at market price .
After order execution , I need to find the price at which order is executed.
The return format of orders function is
{
/// "status": "PUT ORDER REQ RECEIVED",
/// "product": "NRML",
/// "pending_quantity": 0,
/// "order_type": "MARKET",
/// "exchange": "NFO",
/// "order_id": "151220000000000",
/// "parent_order_id": "151210000000000",
/// "price": 0.0,
/// "exchange_order_id": null,
/// "order_timestamp": "2015-12-20 15:01:43",
/// "transaction_type": "BUY",
/// "trigger_price": 0.0,
/// "validity": "DAY",
/// "disclosed_quantity": 0,
/// "status_message": null,
/// "average_price": 0.0,
/// "quantity": 75
}

Please tell me which parameter indicates the price of execution for market orders.
or is there any other way to find it.

Any help will be appreciable.

Thanks & Regards,
Mohit Gahlyan