c8-02.cs

一本很好的教材.C#开发者必备.内容全面,很难得哦.

//在catch块中使用特定异常示例
using System;
public class Employee
{
   //创建职员级别属性
   public int Emlevel
   {
      get
         {
         return(emlevel);
         }
      set
         {
         emlevel = value;
         }
   }
   int emlevel;
}
public class Ex13 
{
   public static void PromoteEmployee(Object emp)
   {
   Employee e = (Employee) emp;
   // 增加职员级别
   e.Emlevel = e.Emlevel + 1;
   }
   public static void Main()
   {
   try
      {
   Object o = new Employee();
   DateTime newyears = new DateTime(2001, 1, 1);
   //提升新职员
   PromoteEmployee(o);
   PromoteEmployee(newyears);
      }
   catch (InvalidCastException e)
      {
      Console.WriteLine("向PromoteEmployee方法传值时错误：" + e);
      }
   }
}