Question

I need a regex for PropertyName e.g. HelloWorld2HowAreYou would get:

 Hello HelloWorld2 HelloWorld2How etc.

I want to use it in C#

Answer 1

[A-Z][a-z0-9]+ would give you all words that start with capital letter. You can write code to concat them one by one to get the complete set of words.

For example matching [A-Z][a-z0-9]+ against HelloWorld2HowAreYou with global flag set, you will get the following matches.

Hello
World2
How
Are
You 

Just iterate through the matches and concat them to form the words.

---

Port this to C#

var s = "HelloWorld2HowAreYou";
var r = /[A-Z][a-z0-9]+/g;
var m;
var matches = [];
while((m = r.exec(s)) != null)
  matches.push(m[0]);
var o = "";
for(var i = 0; i < matches.length; i++)
{
  o += matches[i]
  console.log(o + "\n");
}