Counting how many times a certain char appears in a string before any other char appears

Question

I have many strings. Each string is prepended with at least 1 $. What is the best way to loop through the chars of each string to count how many $\

Answer 1

The simplest approach would be to use LINQ:

var count = text.TakeWhile(c => c == '$').Count();

There are certainly more efficient approaches, but that's probably the simplest.