How to display structure as a image stream in the browser?

How to display structure as a  image stream in the browser? ( structure to png )

 And Why get this message:   The method toBinFormat(String) is undefined for the type String

Thanks.

 cy

Could you tell me exactly what are you doing, when you get this error message, if you can attach the relevant source code part that could also be very helpful.

And please also tell me what are you intend to do, because there may be a better solution which we could suggest for you.

Regards,
Istvan