private bool IsBaseX(char character, int numBase)
{
const string CharList = "0123456789abcdefghijklmnopqrstuvwxyz";
var index = CharList.IndexOf(character.ToString(), StringComparison.CurrentCultureIgnoreCase);
return(index >= 0 && index < numBase);
}
static public long BaseDecode(string value, int numBase)
{
const string CharList = "0123456789abcdefghijklmnopqrstuvwxyz";
var result = 0L;
foreach (char character in value)
{
result = result * numBase + CharList.IndexOf(character.ToString(), StringComparison.CurrentCultureIgnoreCase);
}
return(result);
}