Question

I have the following:

string test = "CustomerNumber";

or

string test2 = "CustomerNumberHello";

the result should be:

string result = "Customer";

The first word from the string is the result, the first word goes until the first uppercase letter, here ‘N’

I already tried some things like this:

var result = string.Concat(s.Select(c => char.IsUpper(c) ? " " + c.ToString() : c.ToString()))
    .TrimStart();

But without success, hope someone could offer me a small and clean solution (without RegEx).

Answer 1

The following should work:

var result = new string(
    test.TakeWhile((c, index) => index == 0 || char.IsLower(c)).ToArray());