1 /// <summary>
2 ///转换人民币大小金额 的摘要说明。
3 /// </summary>
4 public class Rmb
5 {
6 /// <summary>
7 /// 转换人民币大小金额
8 /// </summary>
9 /// <param name="num">金额</param>
10 /// <returns>返回大写形式</returns>
11 public static string CmycurD(decimal num)
12 {
13 string str1 = "零壹贰叁肆伍陆柒捌玖"; //0-9所对应的汉字
14 string str2 = "万仟佰拾亿仟佰拾万仟佰拾元角分"; //数字位所对应的汉字
15 string str3 = ""; //从原num值中取出的值
16 string str4 = ""; //数字的字符串形式
17 string str5 = ""; //人民币大写金额形式
18 int i; //循环变量
19 int j; //num的值乘以100的字符串长度
20 string ch1 = ""; //数字的汉语读法
21 string ch2 = ""; //数字位的汉字读法
22 int nzero = 0; //用来计算连续的零值是几个
23 int temp; //从原num值中取出的值
24
25 num = Math.Round(Math.Abs(num), 2); //将num取绝对值并四舍五入取2位小数
26 str4 = ((long)(num * 100)).ToString(); //将num乘100并转换成字符串形式
27 j = str4.Length; //找出最高位
28 if (j > 15) { return "溢出"; }
29 str2 = str2.Substring(15 - j); //取出对应位数的str2的值。如：200.55,j为5所以str2=佰拾元角分
30
31 //循环取出每一位需要转换的值
32 for (i = 0; i < j; i++)
33 {
34 str3 = str4.Substring(i, 1); //取出需转换的某一位的值
35 temp = Convert.ToInt32(str3); //转换为数字
36 if (i != (j - 3) && i != (j - 7) && i != (j - 11) && i != (j - 15))
37 {
38 //当所取位数不为元、万、亿、万亿上的数字时
39 if (str3 == "0")
40 {
41 ch1 = "";
42 ch2 = "";
43 nzero = nzero + 1;
44 }
45 else
46 {
47 if (str3 != "0" && nzero != 0)
48 {
49 ch1 = "零" + str1.Substring(temp * 1, 1);
50 ch2 = str2.Substring(i, 1);
51 nzero = 0;
52 }
53 else
54 {
55 ch1 = str1.Substring(temp * 1, 1);
56 ch2 = str2.Substring(i, 1);
57 nzero = 0;
58 }
59 }
60 }
61 else
62 {
63 //该位是万亿，亿，万，元位等关键位
64 if (str3 != "0" && nzero != 0)
65 {
66 ch1 = "零" + str1.Substring(temp * 1, 1);
67 ch2 = str2.Substring(i, 1);
68 nzero = 0;
69 }
70 else
71 {
72 if (str3 != "0" && nzero == 0)
73 {
74 ch1 = str1.Substring(temp * 1, 1);
75 ch2 = str2.Substring(i, 1);
76 nzero = 0;
77 }
78 else
79 {
80 if (str3 == "0" && nzero >= 3)
81 {
82 ch1 = "";
83 ch2 = "";
84 nzero = nzero + 1;
85 }
86 else
87 {
88 if (j >= 11)
89 {
90 ch1 = "";
91 nzero = nzero + 1;
92 }
93 else
94 {
95 ch1 = "";
96 ch2 = str2.Substring(i, 1);
97 nzero = nzero + 1;
98 }
99 }
100 }
101 }
102 }
103 if (i == (j - 11) || i == (j - 3))
104 {
105 //如果该位是亿位或元位，则必须写上
106 ch2 = str2.Substring(i, 1);
107 }
108 str5 = str5 + ch1 + ch2;
109
110 if (i == j - 1 && str3 == "0")
111 {
112 //最后一位（分）为0时，加上“整”
113 str5 = str5 + '整';
114 }
115 }
116 if (num == 0)
117 {
118 str5 = "零元整";
119 }
120 return str5;
121 }
122
123 /**/
124 /// <summary>
125 /// 一个重载，将字符串先转换成数字在调用CmycurD(decimal num)
126 /// </summary>
127 /// <param name="num">用户输入的金额，字符串形式未转成decimal</param>
128 /// <returns></returns>
129 public static string CmycurD(string numstr)
130 {
131 try
132 {
133 decimal num = Convert.ToDecimal(numstr);
134 return CmycurD(num);
135 }
136 catch
137 {
138 return "非数字形式！";
139 }
140 }
141 }
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