How to extract last word in richtextbox in c#

Question

I am working with windows form. In my project i need to color the last word of rich text box. When someone write on the given text box of the application i need the last word that is just written on the richtextbox to be colored red or whatever.

I found a way to extract the last word from the following link

http://msdn.microsoft.com/en-us/library/system.windows.documents.textselection.select%28v=vs.95%29.aspx

But i need more handy code to extract the last word if its possible. Please help.

Answer 1

Well, if you really are just looking to get the last word, you could do something like this...Assuming of course, that you make a string equal to the text of your rich text box.

string str="hello, how are you doing?";
if (str.Length >0)
{
    int index=str.LastIndexOf(" ") + 1;
    str = str.Substring(index));
}

Then just return the string, and do what you need to do with it.