about get text from xml

I get text from xml,in Unity3d UI ,I want to read the space also,eg:` `.who can tell me how do it?

As far as I know, whitespace should not be automatically trimmed when you're reading text from XML. Are you sure you don't accidentally have a "Trim" command in your code somewhere?

I would suggest that you use the Script found here : http://www.roguishness.com/unity/ for parsing your XML. It works fine with whitespaces as well.