- // 数字转换成大写金额
- // 例如:(new Money(200)).ToString() == "贰佰元"
- namespace Skyiv.Util
- {
- using System.Text;
- class Test
- {
- static void Main()
- {
- for (;;)
- {
- System.Console.Write("金额: ");
- string s = System.Console.ReadLine();
- decimal m;
- try { m = decimal.Parse(s); }
- catch { break; }
- System.Console.WriteLine("大写: " + new Money(m));
- }
- }
- }
- // 该类重载的 ToString() 方法返回的是大写金额字符串
- class Money
- {
- public string Yuan = "元"; // “元”,可以改为“圆”、“卢布”之类
- public string Jiao = "角"; // “角”,可以改为“拾”
- public string Fen = "分"; // “分”,可以改为“美分”之类
- static string Digit = "零壹贰叁肆伍陆柒捌玖"; // 大写数字
- bool isAllZero = true; // 片段内是否全零
- bool isPreZero = true; // 低一位数字是否是零
- bool Overflow = false; // 溢出标志
- long money100; // 金额*100,即以“分”为单位的金额
- long value; // money100的绝对值
- StringBuilder sb = new StringBuilder(); // 大写金额字符串,逆序
- // 只读属性: "零元"
- public string ZeroString
- {
- get { return Digit[0] + Yuan; }
- }
- // 构造函数
- public Money(decimal money)
- {
- try { money100 = (long)(money * 100m); }
- catch { Overflow = true; }
- if (money100 == long.MinValue) Overflow = true;
- }
- // 重载 ToString() 方法,返回大写金额字符串
- public override string ToString()
- {
- if (Overflow) return "金额超出范围";
- if (money100 == 0) return ZeroString;
- string [] Unit = { Yuan, "万", "亿", "万", "亿亿" };
- value = System.Math.Abs(money100);
- ParseSection(true);
- for (int i = 0; i < Unit.Length && value > 0; i++)
- {
- if (isPreZero && !isAllZero) sb.Append(Digit[0]);
- if (i == 4 && sb.ToString().EndsWith(Unit[2]))
- sb.Remove(sb.Length - Unit[2].Length, Unit[2].Length);
- sb.Append(Unit[i]);
- ParseSection(false);
- if ((i % 2) == 1 && isAllZero)
- sb.Remove(sb.Length - Unit[i].Length, Unit[i].Length);
- }
- if (money100 < 0) sb.Append("负");
- return Reverse();
- }
- // 解析“片段”: “角分(2位)”或“万以内的一段(4位)”
- void ParseSection(bool isJiaoFen)
- {
- string [] Unit = isJiaoFen ?
- new string [] { Fen, Jiao } :
- new string [] { "", "拾", "佰", "仟" };
- isAllZero = true;
- for (int i = 0; i < Unit.Length && value > 0; i++)
- {
- int d = (int)(value % 10);
- if (d != 0)
- {
- if (isPreZero && !isAllZero) sb.Append(Digit[0]);
- sb.AppendFormat("{0}{1}", Unit[i], Digit[d]);
- isAllZero = false;
- }
- isPreZero = (d == 0);
- value /= 10;
- }
- }
- // 反转字符串
- string Reverse()
- {
- StringBuilder sbReversed = new StringBuilder();
- for (int i = sb.Length - 1; i >= 0; i--)
- sbReversed.Append(sb[i]);
- return sbReversed.ToString();
- }
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/140120131607.html
来源: http://www.codesnippet.cn/detail/140120131607.html