In C language octal number can be written by placing 0 before number e.g.
0
int i = 012; // Equals 10 in decimal.
I found the e
No, there are no octal numbers in C#.
Use public static int ToInt32(string value, int fromBase);
public static int ToInt32(string value, int fromBase);
fromBase Type: System.Int32 The base of the number in value, which must be 2, 8, 10, or 16.
MSDN