人民币金额转大写

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Text.RegularExpressions; using System.Threading.Tasks; using System.Windows.Forms; namespace MyRMBDemo { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { this.textBox2.Text = ConvertToChinese(double.Parse(this.textBox1.Text.Trim())); } /// <summary> /// 方法一 将人民币金额转换为大写 /// </summary> /// <param name="dou"></param> /// <returns></returns> private string ConvertToChinese(double dou) { //大写数字数组 string[] num = { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" }; //数量单位数组，个位数为空 string[] unit = { "", "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿", "拾","佰", "仟","兆" }; string d = dou.ToString(); //转成字符串 string zs = string.Empty; //整数 string xs = string.Empty; //小数 int i = d.IndexOf(".");//查找小数位置 string str = string.Empty; //处理小数部分。 if (i > -1) { //仅考虑两位小数 zs = d.Substring(0, i); xs = d.Substring(i + 1, d.Length - i - 1); str = "元"; if (xs.Length == 1) str = str + xs + "角"; else if (xs.Length == 2) str = str + xs.Substring(0, 1) + "角" + xs.Substring(1, 1) + "分"; } else { zs = d; str = "元整"; } //处理整数部分 if (!string.IsNullOrEmpty(zs)) { i = 0; //从整数部分个位数起逐一添加单位 foreach (char s in zs.Reverse()) { str = s.ToString() + unit[i] + str; i++; } } //将阿拉伯数字替换成中文大写数字 for (int m = 0; m < 10; m++) { str = str.Replace(m.ToString(), num[m]); } //替换零佰、零仟、零拾之类不符合汉语规律的字符 str = Regex.Replace(str,"[零]+仟","零"); str = Regex.Replace(str, "[零]+佰", "零"); str = Regex.Replace(str, "[零]+拾", "零"); str = Regex.Replace(str, "[零]+亿", "亿"); str = Regex.Replace(str, "[零]+万", "万"); str = Regex.Replace(str, "[零]+", "零"); //下面4句是匹配什么的，好像不可能出现吧 str = Regex.Replace(str, "亿[万|仟|佰|拾]+", "亿"); str = Regex.Replace(str, "万[仟|佰|拾]+", "万"); str = Regex.Replace(str, "仟[佰|拾]+", "仟"); str = Regex.Replace(str, "佰拾", "佰"); str = Regex.Replace(str, "[零]+元整", "元整"); return str; } private void button2_Click(object sender, EventArgs e) { this.textBox2.Text = ConvertToChinese2(double.Parse(this.textBox1.Text.Trim())); } /// <summary> /// 方法二 /// </summary> /// <param name="dou"></param> /// <returns></returns> private string ConvertToChinese2(double dou) { string s = dou.ToString("#L#E#D#C#K#E#D#C#J#E#D#C#I#E#D#C#H#E#D#C#G#E#D#C#F#E#D#C#.0B0A"); Console.WriteLine(s); string d = Regex.Replace(s, @"((?<=-|^)[^\-1-9]*)|((?'z'0)[0A-E]*((?=[1-9])|(?'-z'(?=[F-L\.]|$))))|((?'b'[F-L])(?'z'0)[0A-L]*((?=[1-9])|(?'-z'(?=[\.]|$))))", "${b}${z}"); Console.WriteLine(d); string RMB = "负元空零壹贰叁肆伍陆柒捌玖空空空空空空空分角拾佰仟万亿兆京垓秭穰"; string r = Regex.Replace(d, ".", m => RMB[m.Value[0] - '-'].ToString()); //Console.WriteLine(r); //string value = Regex.Replace(d, ".", // delegate(Match m){ return RMB[m.Value[0] - '-'].ToString(); }); //string r = Regex.Replace(d, ".", new MatchEvaluator(GetChinese)); if (r.EndsWith("元")) r = r + "整"; return r; } private string GetChinese(Match m) { string RMB = "负元空零壹贰叁肆伍陆柒捌玖空空空空空空空分角拾佰仟万亿兆京垓秭穰"; return RMB[m.Value[0] - '-'].ToString(); } } }