/// <summary>
/// 多线程设置,导致空指针
/// </summary>
public void Test01()
{
List <Student> list1 = new List <Student>()
{
new Student()
{
Name = "A", Age = 1
},
new Student()
{
Name = "B", Age = 2
}
};
StudentTeamA teamA = new StudentTeamA();
Thread t1 = new Thread(() =>
{
teamA.Students = list1;
Thread.Sleep(3000);
Console.WriteLine(teamA.Students.Count);
});
t1.Start();
Thread t2 = new Thread(() => teamA.Students = null);
t2.Start();
}
public static void TestThread()
{
StudentTeamA teamA = new StudentTeamA();
Thread t1 = new Thread(() =>
{
teamA.Students = listStudent;
Thread.Sleep(3000);
Console.WriteLine(listStudent.Count); //模拟对
//集合属性进行一些运算
});
t1.Start();
Thread t2 = new Thread(() =>
{
listStudent = null; //模拟在别的地方对list1而
//不是属性本身赋值为null
});
t2.Start();
}
