你需要看看每个日期部分,并使用一个函数来获取书面等同。我在下面列出的是一类整数转换成书面文字,并扩展其支持DateTime
转换,以及:
public static class WrittenNumerics
{
static readonly string[] ones = new string[] { "", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" };
static readonly string[] teens = new string[] { "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" };
static readonly string[] tens = new string[] { "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" };
static readonly string[] thousandsGroups = { "", " Thousand", " Million", " Billion" };
private static string FriendlyInteger(int n, string leftDigits, int thousands)
{
if (n == 0)
return leftDigits;
string friendlyInt = leftDigits;
if (friendlyInt.Length > 0)
friendlyInt += " ";
if (n < 10)
friendlyInt += ones[n];
else if (n < 20)
friendlyInt += teens[n - 10];
else if (n < 100)
friendlyInt += FriendlyInteger(n % 10, tens[n/10 - 2], 0);
else if (n < 1000)
friendlyInt += FriendlyInteger(n % 100, (ones[n/100] + " Hundred"), 0);
else
friendlyInt += FriendlyInteger(n % 1000, FriendlyInteger(n/1000, "", thousands + 1), 0);
return friendlyInt + thousandsGroups[thousands];
}
public static string DateToWritten(DateTime date)
{
return string.Format("{0} {1} {2}", IntegerToWritten(date.Day), date.ToString("MMMM"), IntegerToWritten(date.Year));
}
public static string IntegerToWritten(int n)
{
if (n == 0)
return "Zero";
else if (n < 0)
return "Negative " + IntegerToWritten(-n);
return FriendlyInteger(n, "", 0);
}
}
免责声明:基本功能礼貌的@Wedge
使用这个类,只需调用DateToWritten方法:
var output = WrittenNumerics.DateToWritten(DateTime.Today);
以上的输出是:Twelve May Two Thousand Twelve
请问为什么要这样做?这是相当不寻常的日期格式(而不是它应该是'五月十二,两千Twelve'?)。 –
@FrédéricHamidi:只有在美国。在世界其他地方,我们将其称为“十二月五日”。这就是“MM/dd”与“dd/MM”差距的原因。 – Douglas
@Douglas,啊,我明白了。感谢您的澄清:) –