public String HardwareID
{
get { return strHardwareID; }
set
{
if (value != null)
{
byte b = Convert.FromBase64String(value);
if (b.Length == 0) throw new ArgumentException(“Hardware ID has zero length, use ‘null’ instead”);
if (b.Length > 32) throw new ArgumentException(“Hardware ID is too long”);
if (b.Length % 4 != 0) throw new ArgumentException(“Hardware ID has invalid length”);
}
strHardwareID = value;
}
}
Try to change this line to the following code:
if (b.Length > 255) throw new ArgumentException("Hardware ID is too long");

