c#基础-异常处理

跟java大同小异,示例代码如下：

 1 /*using System;
 2 
 3 class Sample
 4 {
 5     public static void Main(string[] args)
 6            {
 7                long factorial = 1;
 8                long num = Int64.Parse(args[0]);
 9                try
10                {
11                    checked 
12                    {
13                        //计算num的阶乘
14                        for(long cur = 1;cur <=num;cur++)
15                        factorial *= cur;
16                    }
17                }
18                catch(OverflowException oe)
19                {
20                    Console.WriteLine("计算{0}的阶乘时发生异常",num);
21                    Console.WriteLine("{0}",oe.Message);
22                    return;
23                }
24                Console.WriteLine("{0}的阶乘是{1}",num,factorial);
25             
26            }
27 }
28 */
29 using System;
30 class Sample
31 {
32     static void f(string s)
33     {
34         if(s == null)
35             throw(new ArgumentNullException());
36     }
37     public static void Main()
38     {
39         try
40         {
41             string s = null;
42             f(s);
43         }
44         catch(ArgumentNullException e)
45         {
46             Console.WriteLine("Exception:{0}",e.Message);
47         }
48         finally
49         {
50             Console.WriteLine("excute finally centence");
51         }
52     }
53 }