将 Excel 列号转换为字母字符

for (int i = 0; i < 10000; i++)
{
    List<char> chs = new List<char>();
    int m = i;
    while (m >= 0)
    {
        chs.Add((char)(m % 26 + 65));
        m = m / 26 - 1;
    }
    Console.WriteLine(string.Join("", chs.Reverse<char>()));
}