protected static bool IsExcludedCharacter (char ch)
{
if (ch <= 32 || ch >= 127)
return true;
if (ch == '"' || ch == '#' || ch == '%' || ch == '<' ||
ch == '>' || ch == '[' || ch == '\\' || ch == ']' ||
ch == '^' || ch == '`' || ch == '{' || ch == '|' ||
ch == '}')
return true;
return false;
}