Get multiple numbers from a string

Question

I have strings like

AS_!SD 2453iur ks@d9304-52kasd

I need to get the 2 frist numbres of the string:

for that case will be:

Answer 1

Alternatively you can use the ASCII encoding:

string value = "AS_!SD 2453iur ks@d9304-52kasd";

byte zero = 48; // 0
byte nine = 57; // 9

byte[] asciiBytes = Encoding.ASCII.GetBytes(value);

byte[] asciiNumbers = asciiBytes.Where(b => b >= zero && b <= nine)
                    .ToArray();

char[] numbers = Encoding.ASCII.GetChars(asciiNumbers);

// OR

string numbersString =  Encoding.ASCII.GetString(asciiNumbers);

//First two number from char array
int aNum = Convert.ToInt32(numbers[0]);
int bNum =  Convert.ToInt32(numbers[1]);

//First two number from string
string aString = numbersString.Substring(0,2);