In Regex, how do to add one extra space between every word starting with Capital [duplicate]

Question

I have a string: CategoryName

I need to add space between Category and Name.

So I have to insert a space before each capital letter.

Answer 1

var input = "CategoryName";
var result = Regex.Replace(input, "([a-z])([A-Z])", @"$1 $2"); //Category Name

UPDATE (this will treat sequence of capital letters as one word)

var input = "SimpleHTTPRequest";
var result = Regex.Replace(input, "([a-z]|[A-Z]{2,})([A-Z])", @"$1 $2");
//Simple HTTP Request