一个人民币大小写转换的c#代码（两年前写的）

  1using System;
  2using System.Drawing;
  3using System.Collections;
  4using System.ComponentModel;
  5using System.Windows.Forms;
  6using System.Data;
  7using System.Text;
  8
  9namespace Money
 10{
 11    /**//// <summary>
 12    /// Form1 的摘要说明。
 13    /// </summary>
 14    public class Form1 : System.Windows.Forms.Form
 15    {
 16        private System.Windows.Forms.Label label1;
 17        private System.Windows.Forms.Button button1;
 18        private System.Windows.Forms.TextBox textBox1;
 19        private System.Windows.Forms.TextBox textBox2;
 20        private System.Windows.Forms.Label label2;
 21        /**//// <summary>
 22        /// 必需的设计器变量。
 23        /// </summary>
 24        private System.ComponentModel.Container components = null;
 25
 26        public Form1()
 27        {
 28            //
 29            // Windows 窗体设计器支持所必需的
 30            //
 31            InitializeComponent();
 32
 33            //
 34            // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
 35            //
 36        }
 37
 38        /**//// <summary>
 39        /// 清理所有正在使用的资源。
 40        /// </summary>
 41        protected override void Dispose( bool disposing )
 42        {
 43            if( disposing )
 44            {
 45                if (components != null) 
 46                {
 47                    components.Dispose();
 48                }
 49            }
 50            base.Dispose( disposing );
 51        }
 52
 53        Windows 窗体设计器生成的代码#region Windows 窗体设计器生成的代码
 54        /**//// <summary>
 55        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
 56        /// 此方法的内容。
 57        /// </summary>
 58        private void InitializeComponent()
 59        {
 60            this.label1 = new System.Windows.Forms.Label();
 61            this.button1 = new System.Windows.Forms.Button();
 62            this.textBox1 = new System.Windows.Forms.TextBox();
 63            this.textBox2 = new System.Windows.Forms.TextBox();
 64            this.label2 = new System.Windows.Forms.Label();
 65            this.SuspendLayout();
 66            // 
 67            // label1
 68            // 
 69            this.label1.Location = new System.Drawing.Point(56, 64);
 70            this.label1.Name = "label1";
 71            this.label1.Size = new System.Drawing.Size(136, 23);
 72            this.label1.TabIndex = 0;
 73            this.label1.Text = "小写";
 74            // 
 75            // button1
 76            // 
 77            this.button1.Location = new System.Drawing.Point(56, 152);
 78            this.button1.Name = "button1";
 79            this.button1.TabIndex = 2;
 80            this.button1.Text = "转换";
 81            this.button1.Click += new System.EventHandler(this.button1_Click);
 82            // 
 83            // textBox1
 84            // 
 85            this.textBox1.Location = new System.Drawing.Point(160, 64);
 86            this.textBox1.Name = "textBox1";
 87            this.textBox1.Size = new System.Drawing.Size(376, 21);
 88            this.textBox1.TabIndex = 0;
 89            this.textBox1.Text = "";
 90            // 
 91            // textBox2
 92            // 
 93            this.textBox2.Location = new System.Drawing.Point(160, 104);
 94            this.textBox2.Name = "textBox2";
 95            this.textBox2.ReadOnly = true;
 96            this.textBox2.Size = new System.Drawing.Size(376, 21);
 97            this.textBox2.TabIndex = 1;
 98            this.textBox2.Text = "";
 99            // 
100            // label2
101            // 
102            this.label2.Location = new System.Drawing.Point(56, 104);
103            this.label2.Name = "label2";
104            this.label2.Size = new System.Drawing.Size(120, 23);
105            this.label2.TabIndex = 3;
106            this.label2.Text = "大写";
107            // 
108            // Form1
109            // 
110            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
111            this.ClientSize = new System.Drawing.Size(600, 325);
112            this.Controls.Add(this.textBox2);
113            this.Controls.Add(this.label2);
114            this.Controls.Add(this.textBox1);
115            this.Controls.Add(this.button1);
116            this.Controls.Add(this.label1);
117            this.Name = "Form1";
118            this.Text = "Form1";
119            this.ResumeLayout(false);
120
121        }
122        #endregion
123
124        /**//// <summary>
125        /// 应用程序的主入口点。
126        /// </summary>
127        [STAThread]
128        static void Main() 
129        {
130            Application.Run(new Form1());
131        }
132
133        private void button1_Click(object sender, System.EventArgs e)
134        {
135            double input = 0 ;
136            String strMoney = null;
137            String strinput = null;
138
139            //接受输入
140            strinput = textBox1.Text.Trim();
141            try
142            {
143                input = Convert.ToDouble(strinput);
144                if(input < 0 || input > 100000000000)
145                {
146                    throw new Exception();
147                }
148                strMoney = convMoney( input);
149                textBox2.Text = strMoney + "整";
150            }
151            catch(Exception)
152            {
153                MessageBox.Show("请输入合适的数字！");
154                textBox1.Text = "";
155                textBox2.Text = "";
156                return;
157            }
158        }
159
160        //转换方法
161        private string convMoney(double input)
162        {
163            string result = "";
164            string tmpResult;
165            input *= 100;
166            input = Convert.ToUInt64(input);
167            tmpResult = input.ToString();
168            for(int i=0; i< tmpResult.Length; i++)
169            {
170                string tmpChar = tmpResult.Substring(tmpResult.Length-1-i,1);
171                if(i==0 && tmpChar=="0")
172                {
173                    continue;
174                }
175                else if(i==1 && tmpChar=="0")
176                {
177                    continue;
178                }
179                result = Upper(tmpChar) + Unit(i) + result;
180            }
181            StringBuilder sb = new StringBuilder();
182            sb.Append(result.Substring(0,1));
183            for(int m=1; m<result.Length; m++)
184            {
185                if(result.Substring(m,1) != result.Substring(m-1,1))
186                {
187                    sb.Append(result.Substring(m,1));
188                }
189            }
190            result = sb.ToString();
191
192            if(result.Substring(result.Length-1,1)=="零")
193            {
194                sb.Replace("零","元",result.Length-1,1);
195            }
196            else if((result.Substring(result.Length-1,1)=="角" && result.Substring(result.Length-3,1)=="零") || (result.Substring(result.Length-1,1)=="分" && result.Substring(result.Length-3,1)=="零"))
197            {
198                sb.Replace("零","元",result.Length-3,1);
199            }
200            else if(result.Substring(result.Length-1,1)=="分" && result.Substring(result.Length-3,1)=="角" && result.Substring(result.Length-5,1)=="零")
201            {
202                sb.Replace("零","元",result.Length-5,1);
203            }
204            result = sb.ToString();
205            result = result.Replace("零仟","零");
206            result = result.Replace("零佰","零");
207            result = result.Replace("零拾","零");
208            while(true)
209            {
210                if(result.IndexOf("零零") == -1)
211                {
212                    break;
213                }
214                result = result.Replace("零零","零");
215            }
216            result = result.Replace("零亿","亿");
217            result = result.Replace("零万","万");
218            result = result.Replace("零元","元");
219            result = result.Replace("亿万","亿");
220            return result;
221        }
222
223        //小写转换为大写
224        private string Upper(string strBefore)
225        {
226            string strAfter = null;
227            switch(strBefore)
228            {
229                case "0":
230                    strAfter = "零";
231                    break;
232                case "1":
233                    strAfter = "壹";
234                    break;
235                case "2":
236                    strAfter = "贰";
237                    break;
238                case "3":
239                    strAfter = "叁";
240                    break;
241                case "4":
242                    strAfter = "肆";
243                    break;
244                case "5":
245                    strAfter = "伍";
246                    break;
247                case "6":
248                    strAfter = "陆";
249                    break;
250                case "7":
251                    strAfter = "柒";
252                    break;
253                case "8":
254                    strAfter = "捌";
255                    break;
256                case "9":
257                    strAfter = "玖";
258                    break;
259            }
260            return strAfter;
261        }
262
263        //得到货币单位
264        private string Unit(int i)
265        {
266            string strUnit = "";
267            if(i==0)
268            {
269                strUnit = "分";
270            }
271            else if(i==1)
272            {
273                strUnit = "角";
274            }
275            else
276            {
277                i -= 2;
278                if(i/4 == 0 && i%4 == 0)
279                {
280                    strUnit = "元";
281                }
282                else if(i/4 == 1 && i%4 == 0)
283                {
284                    strUnit = "万";
285                }
286                else if(i/4 == 2 && i%4 == 0)
287                {
288                    strUnit = "亿";
289                }
290                else if(i/4 > 2 && i%4 == 0)
291                {
292                    for(int j = 0; j<i/4; j++)
293                    {
294                        strUnit += "万";
295                    }
296                    strUnit += "亿";
297                }
298                else
299                {
300                    strUnit = getBit(i%4);
301                }
302            }
303            return strUnit;
304        }
305
306        //得到位数
307        private string getBit(int i)
308        {
309            string strBit = "";
310            switch(i)
311            {
312                case 1:
313                    strBit = "拾";
314                    break;
315                case 2:
316                    strBit = "佰";
317                    break;
318                case 3:
319                    strBit = "仟";
320                    break;
321            }
322            return strBit;
323        }
324    }
325}
326