retrieve data from data base

Question

Dear Experts,

 

need to retrive data from database

 

can any one help to

me 

 

my code : 

 =========

public IBraintreeGateway CreateGateway()

{

Environment = "sandbox";

MerchantId = "3zvbxsx8b37wkcwd";

PublicKey = "hsq33wp3wh2f3j98";

PrivateKey = "302aadc3ccdb1b28d0f031a5121163ec";

return new BraintreeGateway(Environment, MerchantId, PublicKey, PrivateKey);

}

 

yelloow color values are stored in db so how can code