I want to enter multiple lines in the text area by clicking enter key. I am not able to do that. When I press an enter key, the control is getting out it.
Welcome to the Ranch. Please confirm that you have got the correct displayed name.
Not sure about your problem, and might not be able to help myself, but I think you would have better chances of a useful reply if you post more details, including a little code showing what you have written (use the "code" button below and ctrl-C ctrl-V to copy it), and more of an explanation of exactly what you want your code to do.