Number of occurrences of a character in a string [duplicate]

Question

I am trying to get the number of occurrences of a certain character such as & in the following string.

string test = "key1=value1&key2=value2&key3=value3"; 

How do I determine that there are 2 ampersands (&) in the above test string variable?

Answer 1

You could do this:

int count = test.Split('&').Length - 1; 

Or with LINQ:

test.Count(x => x == '&');