| public static GetBytesFromBinaryHexString ( string str ) : byte[] | ||
| str | string | The original hex16 string |
| return | byte[] | |
public static byte[] GetBytesFromBinaryHexString(string str)
{
char[] charArray = str.ToLower().ToCharArray();
if (str.Length % 2 != 0)
{
throw new Exception("The hex16 string is invalid");
}
byte[] byteArray = new byte[str.Length / 2];
int index = 0;
int tempHex = 0;
for (int i = 0; i < charArray.Length;)
{
char a = charArray[i++];
if (a >= 'a' && a <= 'f')
{
switch (a)
{
case 'a':
tempHex = 10;
break;
case 'b':
tempHex = 11;
break;
case 'c':
tempHex = 12;
break;
case 'd':
tempHex = 13;
break;
case 'e':
tempHex = 14;
break;
case 'f':
tempHex = 15;
break;
}
}
else if (a >= '0' && a <= '9')
{
tempHex = Convert.ToInt32(a) - 48;
}
else
{
throw new Exception("The hex16 string is invalid");
}
a = charArray[i++];
if (a >= 'a' && a <= 'f')
{
switch (a)
{
case 'a':
tempHex = (tempHex * 16) + 10;
break;
case 'b':
tempHex = (tempHex * 16) + 11;
break;
case 'c':
tempHex = (tempHex * 16) + 12;
break;
case 'd':
tempHex = (tempHex * 16) + 13;
break;
case 'e':
tempHex = (tempHex * 16) + 14;
break;
case 'f':
tempHex = (tempHex * 16) + 15;
break;
}
}
else if (a >= '0' && a <= '9')
{
tempHex = (tempHex * 16) + Convert.ToInt32(a) - 48;
}
else
{
throw new Exception("The hex16 string is invalid");
}
byteArray[index++] = Convert.ToByte(tempHex);
}
return byteArray;
}
