C# 1-Z 解码 数字转字母(A-Z)

/// <summary>
/// 1-Z解码函数
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public static string GetNumber(char s)
{

int i = (int)s;
if (i < 65)
return s.ToString();
else
return (i - 65 + 10).ToString();
}