Find the pattern “[Number1, Number2]” in any given String and get the Integer (32bit) values for Number1 and Number2

int firstNumber;
int secondNumber;
string myString = "afsad fsdaf [25,33] fasdffa fasfasfa";
string strNumbers = myString.Substring(myString.IndexOf('[') + 1, myString.IndexOf(']') -myString.IndexOf('['));
char[] commaSep ={ ',' };
string[] numbers = strNumbers.Split(commaSep);
if (numbers.Length > 0)
   firstNumber = int.Parse(numbers[0]);
if (numbers.Length > 1)
   secondNumber = int.Parse(numbers[1]);