int value = 8;
string binary = Convert.ToString(value, 2);
// binary to base 10
int value = Convert.ToInt32("1101", 2)
string s = string.Join( " ",
MESSAGE.Select( x => Convert.ToString( x, 2 ).PadLeft( 8, '0' ) ) );
int value = 8;
string binary = Convert.ToString(value, 2);