int dec = 0;
for (int i = 0; i < chars.Length; i++)
{
dec += HexMapping(chars[i]) * (int)Math.Pow(16, i);
}
return dec;
}
static int HexMapping(char c)
{
switch (c)
{
case '0':
return 0;
case '1':
return 1;
case '2':
return 2;
case '3':
return 3;
case '4':
return 4;
case '5':
return 5;
case '6':
return 6;
case '7':
return 7;
case '8':
return 8;
case '9':
return 9;
case 'A':
return 10;
case 'B':
return 11;
case 'C':
return 12;
case 'D':
return 13;
case 'E':
return 14;
case 'F':
return 15;
default :
throw new Exception("Invalid Hexadecimal Character :" + c.ToString());
}
}