How to convert a string to NSData

i have a string that I use to create a file. I now need to take that file and get it into an NSData object for sending as an email.

I'm sorry, but I haven't a clue how to get a string into an NSData object! 开发者_StackOverflow中文版Can someone please help me?

Use NSData.FromString (string s), unless you mean loading a file name that is stored in a string and getting the NSData of that, in which case use NSData.FromStream (new FileStream (filename, FileMode.Open));