How to get data from a symbol

[Jerome Raymond Lafon]

hello, does someone has a piece of code in order to retrieve some data like bid and ask?

I am using symbolselect() and refreshrates() but sometimes I cannot retrieve data

[Keith Watford]

Jerome Raymond Lafon:
hello, does someone has a piece of code in order to retrieve some data like bid and ask?

I am using symbolselect() and refreshrates() but sometimes I cannot retrieve data

double entry=SymbolInfoDouble("GBPUSD" ,SYMBOL_ASK);