**////

/// 按输入的数字位数,拆分字符串.
///

/// 需要拆分的字符串
/// 位数
/// 返回一对数组
private string[] StrSpit2(string str, string Num)
{
string StrSpit = Regex.Replace(str, @"([\w\W]{" + Num + "})", "${1}↑", RegexOptions.IgnoreCase);
return StrSpit.Split(new char[] { ’↑’ });
}