How to get the line count of content of the Spark TextArea

I want to get the line count of the spark 开发者_JAVA技巧text area content.

Please help me.

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In this site you can find a working example : http://blog.flexexamples.com/2008/05/08/determining-the-number-of-lines-in-a-textarea-control-in-flex/

and the same is explained here: http://blog.flexexamples.com/2010/01/13/determining-the-number-of-lines-in-a-spark-richeditabletext-control-in-flex-4/

hope it help.

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A way to read the number of lines for a Spark Label is to import the mx_internal namespace like

use namespace mx_internal;

and then access the textLines property of the label like the following:

var numLines : int = myLabel.mx_internal::textLines.length;