c#计算器

  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Data;
  5 using System.Drawing;
  6 using System.Linq;
  7 using System.Text;
  8 using System.Windows.Forms;
  9 
 10 namespace 帅的计算器
 11 {
 12     public partial class Form1 : Form
 13     {
 14         //类字段变量声明
 15         //类字段：第一个运算数、第二个运算数、运算结果
 16         private decimal _num1 = 0, _num2 = 0, _result = 0;
 17         //类字段：运算符号
 18         private string _operator = "";
 19         //类字段：运算符号的数量
 20         private int _operatorCount = 0;
 21         //类字段：首数字标志位
 22         private bool _firstNumberFlag = true;
 23         //类字段：进制标志位
 24         private string _NumberSystem = "dec";
 25 
 26 
 27         //类方法：把十进制转化为二进制
 28         public string DecToBin(int dec)
 29         {
 30             string bin = "";
 31             while (dec > 1)
 32             {
 33                 bin = Convert.ToChar(dec % 2 + '0') + bin;
 34                 dec = dec / 2;
 35             }
 36             bin = Convert.ToChar(dec + '0') + bin;
 37 
 38             return bin;
 39         }
 40 
 41         //类方法：把二进制转化为十进制
 42         public int BinToDec(string bin)
 43         {
 44             int dec = 0;
 45             for (int i = bin.Length; i >= 1; i--)
 46             {
 47                 dec = dec + Convert.ToInt32(bin[i - 1] - '0') * (int)(Math.Pow(2, bin.Length - i));
 48             }
 49 
 50             return dec;
 51         }
 52 
 53         //类方法：把十进制转化为八进制
 54         public string DecToOct(int dec)
 55         {
 56             string oct = "";
 57             while (dec > 7)
 58             {
 59                 oct = Convert.ToChar(dec % 8 + '0') + oct;
 60                 dec = dec / 8;
 61             }
 62             oct = Convert.ToChar(dec + '0') + oct;
 63 
 64             return oct;
 65         }
 66 
 67         //类方法：把八进制转化为十进制
 68         public int OctToDec(string oct)
 69         {
 70             int dec = 0;
 71             for (int i = oct.Length; i >= 1; i--)
 72             {
 73                 dec = dec + Convert.ToInt32(oct[i - 1] - '0') * (int)(Math.Pow(8, oct.Length - i));
 74             }
 75 
 76             return dec;
 77         }
 78 
 79         //构造方法
 80         public Form1()
 81         {
 82             InitializeComponent();
 83         }
 84 
 85         //按钮"0"的Click事件响应方法
 86         private void buttonNum0_Click(object sender, EventArgs e)
 87         {
 88             //判断是否为首数字。如果是，则替换；如果否，则追加。
 89             if (_firstNumberFlag == true)
 90             {
 91                 //编辑框文字替换为"0"
 92                 textBoxResult.Text = "0";
 93                 //首数字标志位设为false
 94                 _firstNumberFlag = false;
 95             }
 96             else
 97                 //编辑框文字中追加一个"0"
 98                 textBoxResult.Text = textBoxResult.Text + "0";
 99 
100             //使输入焦点落到编辑框textBoxResult中
101             textBoxResult.Focus();
102             //让光标落在编辑框textBoxResult的最后面
103             textBoxResult.Select(textBoxResult.Text.Length, 0);
104         }
105 
106         //按钮"1"的Click事件响应方法
107         private void buttonNum1_Click(object sender, EventArgs e)
108         {
109             //判断是否为首数字。如果是，则替换；如果否，则追加。
110             if (_firstNumberFlag == true)
111             {
112                 //编辑框文字替换为"1"
113                 textBoxResult.Text = "1";
114                 //首数字标志位设为false
115                 _firstNumberFlag = false;
116             }
117             else
118                 //编辑框文字中追加一个"1"
119                 textBoxResult.Text = textBoxResult.Text + "1";
120 
121             //使输入焦点落到编辑框textBoxResult中
122             textBoxResult.Focus();
123             //让光标落在编辑框textBoxResult的最后面
124             textBoxResult.Select(textBoxResult.Text.Length, 0);
125         }
126 
127         //按钮"2"的Click事件响应方法
128         private void buttonNum2_Click(object sender, EventArgs e)
129         {
130             //判断是否为首数字。如果是，则替换；如果否，则追加。
131             if (_firstNumberFlag == true)
132             {
133                 //编辑框文字替换为"2"
134                 textBoxResult.Text = "2";
135                 //首数字标志位设为false
136                 _firstNumberFlag = false;
137             }
138             else
139                 //编辑框文字中追加一个"2"
140                 textBoxResult.Text = textBoxResult.Text + "2";
141 
142             //使输入焦点落到编辑框textBoxResult中
143             textBoxResult.Focus();
144             //让光标落在编辑框textBoxResult的最后面
145             textBoxResult.Select(textBoxResult.Text.Length, 0);
146         }
147 
148         //按钮"3"的Click事件响应方法
149         private void buttonNum3_Click(object sender, EventArgs e)
150         {
151             //判断是否为首数字。如果是，则替换；如果否，则追加。
152             if (_firstNumberFlag == true)
153             {
154                 //编辑框文字替换为"3"
155                 textBoxResult.Text = "3";
156                 //首数字标志位设为false
157                 _firstNumberFlag = false;
158             }
159             else
160                 //编辑框文字中追加一个"3"
161                 textBoxResult.Text = textBoxResult.Text + "3";
162 
163             //使输入焦点落到编辑框textBoxResult中
164             textBoxResult.Focus();
165             //让光标落在编辑框textBoxResult的最后面
166             textBoxResult.Select(textBoxResult.Text.Length, 0);
167         }
168 
169         //按钮"4"的Click事件响应方法
170         private void buttonNum4_Click(object sender, EventArgs e)
171         {
172             //判断是否为首数字。如果是，则替换；如果否，则追加。
173             if (_firstNumberFlag == true)
174             {
175                 //编辑框文字替换为"4"
176                 textBoxResult.Text = "4";
177                 //首数字标志位设为false
178                 _firstNumberFlag = false;
179             }
180             else
181                 //编辑框文字中追加一个"4"
182                 textBoxResult.Text = textBoxResult.Text + "4";
183 
184             //使输入焦点落到编辑框textBoxResult中
185             textBoxResult.Focus();
186             //让光标落在编辑框textBoxResult的最后面
187             textBoxResult.Select(textBoxResult.Text.Length, 0);
188         }
189 
190         //按钮"5"的Click事件响应方法
191         private void buttonNum5_Click(object sender, EventArgs e)
192         {
193             //判断是否为首数字。如果是，则替换；如果否，则追加。
194             if (_firstNumberFlag == true)
195             {
196                 //编辑框文字替换为"5"
197                 textBoxResult.Text = "5";
198                 //首数字标志位设为false
199                 _firstNumberFlag = false;
200             }
201             else
202                 //编辑框文字中追加一个"5"
203                 textBoxResult.Text = textBoxResult.Text + "5";
204 
205             //使输入焦点落到编辑框textBoxResult中
206             textBoxResult.Focus();
207             //让光标落在编辑框textBoxResult的最后面
208             textBoxResult.Select(textBoxResult.Text.Length, 0);
209         }
210 
211         //按钮"6"的Click事件响应方法
212         private void buttonNum6_Click(object sender, EventArgs e)
213         {
214             //判断是否为首数字。如果是，则替换；如果否，则追加。
215             if (_firstNumberFlag == true)
216             {
217                 //编辑框文字替换为"6"
218                 textBoxResult.Text = "6";
219                 //首数字标志位设为false
220                 _firstNumberFlag = false;
221             }
222             else
223                 //编辑框文字中追加一个"6"
224                 textBoxResult.Text = textBoxResult.Text + "6";
225 
226             //使输入焦点落到编辑框textBoxResult中
227             textBoxResult.Focus();
228             //让光标落在编辑框textBoxResult的最后面
229             textBoxResult.Select(textBoxResult.Text.Length, 0);
230         }
231 
232         //按钮"7"的Click事件响应方法
233         private void buttonNum7_Click(object sender, EventArgs e)
234         {
235             //判断是否为首数字。如果是，则替换；如果否，则追加。
236             if (_firstNumberFlag == true)
237             {
238                 //编辑框文字替换为"7"
239                 textBoxResult.Text = "7";
240                 //首数字标志位设为false
241                 _firstNumberFlag = false;
242             }
243             else
244                 //编辑框文字中追加一个"7"
245                 textBoxResult.Text = textBoxResult.Text + "7";
246 
247             //使输入焦点落到编辑框textBoxResult中
248             textBoxResult.Focus();
249             //让光标落在编辑框textBoxResult的最后面
250             textBoxResult.Select(textBoxResult.Text.Length, 0);
251         }
252 
253         //按钮"8"的Click事件响应方法
254         private void buttonNum8_Click(object sender, EventArgs e)
255         {
256             //判断是否为首数字。如果是，则替换；如果否，则追加。
257             if (_firstNumberFlag == true)
258             {
259                 //编辑框文字替换为"8"
260                 textBoxResult.Text = "8";
261                 //首数字标志位设为false
262                 _firstNumberFlag = false;
263             }
264             else
265                 //编辑框文字中追加一个"8"
266                 textBoxResult.Text = textBoxResult.Text + "8";
267 
268             //使输入焦点落到编辑框textBoxResult中
269             textBoxResult.Focus();
270             //让光标落在编辑框textBoxResult的最后面
271             textBoxResult.Select(textBoxResult.Text.Length, 0);
272         }
273 
274         //按钮"9"的Click事件响应方法
275         private void buttonNum9_Click(object sender, EventArgs e)
276         {
277             //判断是否为首数字。如果是，则替换；如果否，则追加。
278             if (_firstNumberFlag == true)
279             {
280                 //编辑框文字替换为"9"
281                 textBoxResult.Text = "9";
282                 //首数字标志位设为false
283                 _firstNumberFlag = false;
284             }
285             else
286                 //编辑框文字中追加一个"9"
287                 textBoxResult.Text = textBoxResult.Text + "9";
288 
289             //使输入焦点落到编辑框textBoxResult中
290             textBoxResult.Focus();
291             //让光标落在编辑框textBoxResult的最后面
292             textBoxResult.Select(textBoxResult.Text.Length, 0);
293         }
294 
295         //按钮"."的Click事件响应方法
296         private void buttonDot_Click(object sender, EventArgs e)
297         {
298             //判断是否为首数字。如果是，则替换；如果否，则追加。
299             if (_firstNumberFlag == true)
300             {
301                 //编辑框文字替换为"."
302                 textBoxResult.Text = ".";
303                 //首数字标志位设为false
304                 _firstNumberFlag = false;
305             }
306             else
307             {
308                 //判断现有数字中是否含有小数点
309                 if (textBoxResult.Text.IndexOf('.') == -1)
310                     //编辑框文字中追加一个"."
311                     textBoxResult.Text = textBoxResult.Text + ".";
312             }
313 
314             //使输入焦点落到编辑框textBoxResult中
315             textBoxResult.Focus();
316             //让光标落在编辑框textBoxResult的最后面
317             textBoxResult.Select(textBoxResult.Text.Length, 0);
318         }
319 
320 
321         //按钮"+"的Click事件响应方法
322         private void buttonAdd_Click(object sender, EventArgs e)
323         {
324             //首数字标志位设为true
325             _firstNumberFlag = true;
326 
327             //运算符号数量加1
328             _operatorCount = _operatorCount + 1;
329             //判断是否为第一个运算符
330             if (_operatorCount == 1)
331             {
332                 //保存第一个运算数到类字段变量_num1中(注意进制转化问题)
333                 if (_NumberSystem == "dec")
334                     _num1 = Convert.ToDecimal(textBoxResult.Text);
335                 else if (_NumberSystem == "bin")
336                     _num1 = BinToDec(textBoxResult.Text);
337                 else if (_NumberSystem == "oct")
338                     _num1 = OctToDec(textBoxResult.Text);
339                 //保存运算符号到类字段变量_operator中
340                 _operator = "+";
341                 //清空编辑框 
342                 textBoxResult.Text = "";
343             }
344             else
345             {
346                 //保存第二个运算数到类字段变量_num2中(注意进制转化问题)
347                 if (_NumberSystem == "dec")
348                     _num2 = Convert.ToDecimal(textBoxResult.Text);
349                 else if (_NumberSystem == "bin")
350                     _num2 = BinToDec(textBoxResult.Text);
351                 else if (_NumberSystem == "oct")
352                     _num2 = OctToDec(textBoxResult.Text);
353                 //进行运算
354                 if (_operator == "+")
355                     _num1 = _num1 + _num2;
356                 else if (_operator == "-")
357                     _num1 = _num1 - _num2;
358                 else if (_operator == "*")
359                     _num1 = _num1 * _num2;
360                 else if (_operator == "/")
361                     _num1 = _num1 / _num2;
362                 //保存运算符号到类字段变量_operator中
363                 _operator = "+";
364                 //在编辑框中显示前面数字的运算结果(注意进制转化问题)
365                 if (_NumberSystem == "dec")
366                     textBoxResult.Text = _num1.ToString();
367                 else if (_NumberSystem == "bin")
368                     textBoxResult.Text = DecToBin((int)_num1);
369                 else if (_NumberSystem == "oct")
370                     textBoxResult.Text = DecToOct((int)_num1);
371             }
372 
373             //使输入焦点落到编辑框textBoxResult中
374             textBoxResult.Focus();
375             //让光标落在编辑框textBoxResult的最后面
376             textBoxResult.Select(textBoxResult.Text.Length, 0);
377         }
378 
379         //按钮"-"的Click事件响应方法
380         private void buttonSubtract_Click(object sender, EventArgs e)
381         {
382             //首数字标志位设为true
383             _firstNumberFlag = true;
384 
385             //运算符号数量加1
386             _operatorCount = _operatorCount + 1;
387             //判断是否为第一个运算符
388             if (_operatorCount == 1)
389             {
390                 //保存第一个运算数到类字段变量_num1中(注意进制转化问题)
391                 if (_NumberSystem == "dec")
392                     _num1 = Convert.ToDecimal(textBoxResult.Text);
393                 else if (_NumberSystem == "bin")
394                     _num1 = BinToDec(textBoxResult.Text);
395                 else if (_NumberSystem == "oct")
396                     _num1 = OctToDec(textBoxResult.Text);
397                 //保存运算符号到类字段变量_operator中
398                 _operator = "-";
399                 //清空编辑框 
400                 textBoxResult.Text = "";
401             }
402             else
403             {
404                 //保存第二个运算数到类字段变量_num2中(注意进制转化问题)
405                 if (_NumberSystem == "dec")
406                     _num2 = Convert.ToDecimal(textBoxResult.Text);
407                 else if (_NumberSystem == "bin")
408                     _num2 = BinToDec(textBoxResult.Text);
409                 else if (_NumberSystem == "oct")
410                     _num2 = OctToDec(textBoxResult.Text);
411                 //进行运算
412                 if (_operator == "+")
413                     _num1 = _num1 + _num2;
414                 else if (_operator == "-")
415                     _num1 = _num1 - _num2;
416                 else if (_operator == "*")
417                     _num1 = _num1 * _num2;
418                 else if (_operator == "/")
419                     _num1 = _num1 / _num2;
420                 //保存运算符号到类字段变量_operator中
421                 _operator = "-";
422                 //在编辑框中显示前面数字的运算结果(注意进制转化问题) 
423                 if (_NumberSystem == "dec")
424                     textBoxResult.Text = _num1.ToString();
425                 else if (_NumberSystem == "bin")
426                     textBoxResult.Text = DecToBin((int)_num1);
427                 else if (_NumberSystem == "oct")
428                     textBoxResult.Text = DecToOct((int)_num1);
429             }
430 
431             //使输入焦点落到编辑框textBoxResult中
432             textBoxResult.Focus();
433             //让光标落在编辑框textBoxResult的最后面
434             textBoxResult.Select(textBoxResult.Text.Length, 0);
435         }
436 
437         //按钮"*"的Click事件响应方法
438         private void buttonMultiply_Click(object sender, EventArgs e)
439         {
440             //首数字标志位设为true
441             _firstNumberFlag = true;
442 
443             //运算符号数量加1
444             _operatorCount = _operatorCount + 1;
445             //判断是否为第一个运算符
446             if (_operatorCount == 1)
447             {
448                 //保存第一个运算数到类字段变量_num1中(注意进制转化问题)
449                 if (_NumberSystem == "dec")
450                     _num1 = Convert.ToDecimal(textBoxResult.Text);
451                 else if (_NumberSystem == "bin")
452                     _num1 = BinToDec(textBoxResult.Text);
453                 else if (_NumberSystem == "oct")
454                     _num1 = OctToDec(textBoxResult.Text);
455                 //保存运算符号到类字段变量_operator中
456                 _operator = "*";
457                 //清空编辑框 
458                 textBoxResult.Text = "";
459             }
460             else
461             {
462                 //保存第二个运算数到类字段变量_num2中(注意进制转化问题)
463                 if (_NumberSystem == "dec")
464                     _num2 = Convert.ToDecimal(textBoxResult.Text);
465                 else if (_NumberSystem == "bin")
466                     _num2 = BinToDec(textBoxResult.Text);
467                 else if (_NumberSystem == "oct")
468                     _num2 = OctToDec(textBoxResult.Text);
469                 //进行运算
470                 if (_operator == "+")
471                     _num1 = _num1 + _num2;
472                 else if (_operator == "-")
473                     _num1 = _num1 - _num2;
474                 else if (_operator == "*")
475                     _num1 = _num1 * _num2;
476                 else if (_operator == "/")
477                     _num1 = _num1 / _num2;
478                 //保存运算符号到类字段变量_operator中
479                 _operator = "*";
480                 //在编辑框中显示前面数字的运算结果(注意进制转化问题) 
481                 if (_NumberSystem == "dec")
482                     textBoxResult.Text = _num1.ToString();
483                 else if (_NumberSystem == "bin")
484                     textBoxResult.Text = DecToBin((int)_num1);
485                 else if (_NumberSystem == "oct")
486                     textBoxResult.Text = DecToOct((int)_num1);
487             }
488 
489             //使输入焦点落到编辑框textBoxResult中
490             textBoxResult.Focus();
491             //让光标落在编辑框textBoxResult的最后面
492             textBoxResult.Select(textBoxResult.Text.Length, 0);
493         }
494 
495         //按钮"/"的Click事件响应方法
496         private void buttonDivide_Click(object sender, EventArgs e)
497         {
498             //首数字标志位设为true
499             _firstNumberFlag = true;
500 
501             //运算符号数量加1
502             _operatorCount = _operatorCount + 1;
503             //判断是否为第一个运算符
504             if (_operatorCount == 1)
505             {
506                 //保存第一个运算数到类字段变量_num1中(注意进制转化问题)
507                 if (_NumberSystem == "dec")
508                     _num1 = Convert.ToDecimal(textBoxResult.Text);
509                 else if (_NumberSystem == "bin")
510                     _num1 = BinToDec(textBoxResult.Text);
511                 else if (_NumberSystem == "oct")
512                     _num1 = OctToDec(textBoxResult.Text);
513                 //保存运算符号到类字段变量_operator中
514                 _operator = "/";
515                 //清空编辑框 
516                 textBoxResult.Text = "";
517             }
518             else
519             {
520                 //保存第二个运算数到类字段变量_num2中(注意进制转化问题)
521                 if (_NumberSystem == "dec")
522                     _num2 = Convert.ToDecimal(textBoxResult.Text);
523                 else if (_NumberSystem == "bin")
524                     _num2 = BinToDec(textBoxResult.Text);
525                 else if (_NumberSystem == "oct")
526                     _num2 = OctToDec(textBoxResult.Text);
527                 //进行运算
528                 if (_operator == "+")
529                     _num1 = _num1 + _num2;
530                 else if (_operator == "-")
531                     _num1 = _num1 - _num2;
532                 else if (_operator == "*")
533                     _num1 = _num1 * _num2;
534                 else if (_operator == "/")
535                     _num1 = _num1 / _num2;
536                 //保存运算符号到类字段变量_operator中
537                 _operator = "/";
538                 //在编辑框中显示前面数字的运算结果(注意进制转化问题) 
539                 if (_NumberSystem == "dec")
540                     textBoxResult.Text = _num1.ToString();
541                 else if (_NumberSystem == "bin")
542                     textBoxResult.Text = DecToBin((int)_num1);
543                 else if (_NumberSystem == "oct")
544                     textBoxResult.Text = DecToOct((int)_num1);
545             }
546 
547             //使输入焦点落到编辑框textBoxResult中
548             textBoxResult.Focus();
549             //让光标落在编辑框textBoxResult的最后面
550             textBoxResult.Select(textBoxResult.Text.Length, 0);
551         }
552 
553         //按钮"="的Click事件响应方法
554         private void buttonEqual_Click(object sender, EventArgs e)
555         {
556             //保存第二个运算数到类字段变量_num2中(注意进制转化问题)
557             if (_NumberSystem == "dec")
558                 _num2 = Convert.ToDecimal(textBoxResult.Text);
559             else if (_NumberSystem == "bin")
560                 _num2 = BinToDec(textBoxResult.Text);
561             else if (_NumberSystem == "oct")
562                 _num2 = OctToDec(textBoxResult.Text);
563             //进行运算
564             if (_operator == "+")
565                 _result = _num1 + _num2;
566             else if (_operator == "-")
567                 _result = _num1 - _num2;
568             else if (_operator == "*")
569                 _result = _num1 * _num2;
570             else if (_operator == "/")
571                 _result = _num1 / _num2;
572             //在编辑框中显示运算结果(注意进制转化问题)
573             if (_NumberSystem == "dec")
574                 textBoxResult.Text = _result.ToString();
575             else if (_NumberSystem == "bin")
576                 textBoxResult.Text = DecToBin((int)_result);
577             else if (_NumberSystem == "oct")
578                 textBoxResult.Text = DecToOct((int)_result);
579 
580             //运算符号数量清零
581             _operatorCount = 0;
582 
583             //使输入焦点落到编辑框textBoxResult中
584             textBoxResult.Focus();
585             //让光标落在编辑框textBoxResult的最后面
586             textBoxResult.Select(textBoxResult.Text.Length, 0);
587         }
588 
589         //按钮"<-"的Click事件响应方法
590         private void buttonBackSpace_Click(object sender, EventArgs e)
591         {
592             //如果textBoxResult.Text不为空
593             if (textBoxResult.Text.Length > 0)
594                 //去除textBoxResult.Text中的最后一个字符
595                 textBoxResult.Text = textBoxResult.Text.Substring(0, textBoxResult.Text.Length - 1);
596 
597             //使输入焦点落到编辑框textBoxResult中
598             textBoxResult.Focus();
599         }
600 
601         //按钮"C"的Click事件响应方法
602         private void buttonClear_Click(object sender, EventArgs e)
603         {
604             //初始化有关类字段变量
605             _num1 = 0;
606             _num2 = 0;
607             _result = 0;
608             _operator = "";
609             _operatorCount = 0;
610             _firstNumberFlag = false;
611             //清空编辑框
612             textBoxResult.Text = "";
613 
614             //使输入焦点落到编辑框textBoxResult中
615             textBoxResult.Focus();
616             //让光标落在编辑框textBoxResult的最后面
617             textBoxResult.Select(textBoxResult.Text.Length, 0);
618         }
619 
620         //按钮"+/-"的Click事件响应方法
621        
622 
623         //编辑框的KeyPress(键盘下压)事件的响应方法
624         private void textBoxResult_KeyPress(object sender, KeyPressEventArgs e)
625         {
626             //根据用户按下的键的值，调用相应的响应方法
627             if (e.KeyChar == '0')
628                 buttonNum0_Click(sender, e);
629             else if (e.KeyChar == '1')
630                 buttonNum1_Click(sender, e);
631             else if (e.KeyChar == '2')
632                 buttonNum2_Click(sender, e);
633             else if (e.KeyChar == '3')
634                 buttonNum3_Click(sender, e);
635             else if (e.KeyChar == '4')
636                 buttonNum4_Click(sender, e);
637             else if (e.KeyChar == '5')
638                 buttonNum5_Click(sender, e);
639             else if (e.KeyChar == '6')
640                 buttonNum6_Click(sender, e);
641             else if (e.KeyChar == '7')
642                 buttonNum7_Click(sender, e);
643             else if (e.KeyChar == '8')
644                 buttonNum8_Click(sender, e);
645             else if (e.KeyChar == '9')
646                 buttonNum9_Click(sender, e);
647 
648             else if (e.KeyChar == '+')
649                 buttonAdd_Click(sender, e);
650             else if (e.KeyChar == '-')
651                 buttonSubtract_Click(sender, e);
652             else if (e.KeyChar == '*')
653                 buttonMultiply_Click(sender, e);
654             else if (e.KeyChar == '/')
655                 buttonDivide_Click(sender, e);
656             else if (e.KeyChar == '=')
657                 buttonEqual_Click(sender, e);
658 
659             else if (e.KeyChar == 'c')
660                 buttonClear_Click(sender, e);
661             else if (e.KeyChar == '.')
662                 buttonDot_Click(sender, e);
663 
664             else if (e.KeyChar == 8)             //或者 (e.KeyChar == '')   或者 (e.KeyChar == (char)Keys.Back)
665                 buttonBackSpace_Click(sender, e);
666 
667             //让光标落在编辑框textBoxResult的最后面
668             textBoxResult.Select(textBoxResult.Text.Length, 0);
669         }
670 
671 
672 
673 
674 
675         private void radioButtonOctal_CheckedChanged(object sender, EventArgs e)
676         {
677 
678         }
679 
680         private void Form1_Load(object sender, EventArgs e)
681         {
682 
683         }
684 
685         private void radioButtonDecimal_CheckedChanged(object sender, EventArgs e)
686         {
687 
688         }
689 
690         private void radioButtonBinary_CheckedChanged(object sender, EventArgs e)
691         {
692 
693             //进行进制转换
694             if (textBoxResult.Text != "")
695             {
696                 if (_NumberSystem == "dec")
697                     textBoxResult.Text = DecToBin((int)Math.Round(Convert.ToDecimal(textBoxResult.Text)));
698                 else if (_NumberSystem == "oct")
699                 {
700                     int dec = OctToDec(textBoxResult.Text);
701                     textBoxResult.Text = DecToBin(dec);
702                 }
703             }
704 
705             //启用或禁用有关按钮
706             buttonNum2.Enabled = false;
707             buttonNum3.Enabled = false;
708             buttonNum4.Enabled = false;
709             buttonNum5.Enabled = false;
710             buttonNum6.Enabled = false;
711             buttonNum7.Enabled = false;
712             buttonNum8.Enabled = false;
713             buttonNum9.Enabled = false;
714             buttonDot.Enabled = false;
715 
716             //保存进制标志
717             _NumberSystem = "bin";
718         }
719 
720         private void radioButtonDecimal_Click(object sender, EventArgs e)
721         {
722             //进行进制转换
723             if (textBoxResult.Text != "")
724             {
725                 if (_NumberSystem == "bin")
726                     textBoxResult.Text = BinToDec(textBoxResult.Text).ToString();
727                 else if (_NumberSystem == "oct")
728                     textBoxResult.Text = OctToDec(textBoxResult.Text).ToString();
729             }
730 
731             //启用或禁用有关按钮
732             buttonNum2.Enabled = true;
733             buttonNum3.Enabled = true;
734             buttonNum4.Enabled = true;
735             buttonNum5.Enabled = true;
736             buttonNum6.Enabled = true;
737             buttonNum7.Enabled = true;
738             buttonNum8.Enabled = true;
739             buttonNum9.Enabled = true;
740             buttonDot.Enabled = true;
741 
742             //保存进制标志
743             _NumberSystem = "dec";
744         }
745 
746         private void radioButtonOctal_Click(object sender, EventArgs e)
747         {
748             //进行进制转换
749             if (textBoxResult.Text != "")
750             {
751                 if (_NumberSystem == "dec")
752                     textBoxResult.Text = DecToOct((int)Math.Round(Convert.ToDecimal(textBoxResult.Text)));
753                 else if (_NumberSystem == "bin")
754                 {
755                     int dec = BinToDec(textBoxResult.Text);
756                     textBoxResult.Text = DecToOct(dec);
757                 }
758             }
759 
760             //启用或禁用有关按钮
761             buttonNum2.Enabled = true;
762             buttonNum3.Enabled = true;
763             buttonNum4.Enabled = true;
764             buttonNum5.Enabled = true;
765             buttonNum6.Enabled = true;
766             buttonNum7.Enabled = true;
767             buttonNum8.Enabled = false;
768             buttonNum9.Enabled = false;
769             buttonDot.Enabled = false;
770 
771             //保存进制标志
772             _NumberSystem = "oct";
773         }
774 
775 
776     }
777 }
View Code
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原文地址：https://www.cnblogs.com/caiyishuai/p/13271195.html