How to get Request.Form["amount"] data get in master page

Question

Hi,

ide Copy Code

Below i mention this coding didn't get data in asp.net c#,so please how to get master page this 

data(amount,firstname,email,etc...)

Example coding:Hide Copy Code

  

if (

string.IsNullOrEmpty(ConfigurationManager.AppSettings["MERCHANT_KEY"]) ||

string.IsNullOrEmpty(txnid1) ||

string.IsNullOrEmpty(Request.Form["amount"]) ||

string.IsNullOrEmpty(Request.Form["firstname"]) ||

string.IsNullOrEmpty(Request.Form["email"]) ||

string.IsNullOrEmpty(Request.Form["phone"]) ||

string.IsNullOrEmpty(Request.Form["productinfo"]) ||

string.IsNullOrEmpty(Request.Form["surl"]) ||

string.IsNullOrEmpty(Request.Form["furl"]) ||

string.IsNullOrEmpty(Request.Form["service_provider"])

)