大家看一个关于ArrayList的一个问题
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace CollectionDemo
{
class Student
{
private string name;
public string Name
{
get { return name; }
set { name = value; }
}
private int id;
public int Id
{
get { return id; }
set { id = value; }
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace CollectionDemo
{
class Teacher
{
private string name;
public string Name
{
get { return name; }
set { name = value; }
}
private int id;
public int Id
{
get { return id; }
set { id = value; }
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;
namespace CollectionDemo
{
class Program
{
static void Main(string[] args)
{
Student s1 = new Student();
Student s2 = new Student();
Teacher t1 = new Teacher();
Teacher t2 = new Teacher();
s1.Name = "dwyane";
s1.Id = 1;
s2.Name = "lebron";
s2.Id = 2;
t1.Name = "paul";
t1.Id = 3;
t2.Name = "kobe";
t2.Id = 4;
ArrayList list = new ArrayList(5);
list.Add(s1);
list.Add(s2);
list.Add(t1);
list.Add(t2);
foreach (Object o in list)
{
if (o is Student)
{
Console.WriteLine(((Student)o).Name+"\t"+((Student)o).Id);
}
else
{
Console.WriteLine(((Teacher)o).Name + "\t" + ((Teacher)o).Id);
}
Console.ReadLine();
}
}
}
}
