C#

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Windows.Forms;
 6 
 7 namespace 异常处理_try_catch
 8 {
 9     class Program
10     {
11         static void Main(string[] args)
12         {
13             //proTest_Try_Catch(222222299, 0, "/");
14             proTest_Try_Catch(100, 10, "+");
15            Console.ReadLine();
16         }
17         /// <proTest_Try_Catch>
18         /// 
19         /// 摘要:
20         ///         测试异常处理 :　try..catch
21         ///         
22         /// </proTest_Try_Catch>
23         /// <param name="obj1",     操作数1        ></param>
24         /// <param name="obj2",     操作数2        ></param>
25         /// <param name="Operators",       运算符     ></param>
26         static void proTest_Try_Catch(int obj1, int obj2, string strOperators)
27         {
28             var result = 0;
29             try
30             {
31                 switch ( strOperators )
32                 {
33                     case "+":
34                         result = obj1 + obj2;
35                         Console.WriteLine(result);
36                         break;
37                     case "-":
38                         result = obj1 - obj2;
39                         Console.WriteLine(result);
40                         break;
41                     case "*":
42                         result = obj1 * obj2;
43                         Console.WriteLine(result);
44                         break;
45                     case "/":
46                         result = obj1 / obj2;
47                         Console.WriteLine(result);
48                         break;
49                 }
50                 if ( result > 100)
51                 {
52                     throw new ApplicationException("哥的自定义异常消息!!!!!!!!!!!!!!!");
53                 }
54             }
55             catch (Exception e)             // 捕获【"哥的自定义异常消息!!!!!!!!!!!!!!!"】
56             {
57                 MessageBox.Show("二货 : " + e.Message);
58                 return;                         // 就算有 return 异常处理还是会走到finally;
59             }
60             finally                              // 必须执行的代码
61             {
62                 MessageBox.Show("哈哈哈");
63             }
64 
65         }
66     }
67 }