AutoResetEvent.Set() 这个方法的问题，请专业人士回答

他是把事件状态设置为终止状态，什么意思？是哪个事件状态设置为终止状态。

具体代码
using System;
using System.Threading;

namespace AutoResetEvent_Examples
{
class MyMainClass
{
//Initially not signaled.
const int numIterations = 100;
static AutoResetEvent myResetEvent = new AutoResetEvent(false);
static int number;

static void Main()
{
//Create and start the reader thread.
Thread myReaderThread = new Thread(new ThreadStart(MyReadThreadProc));
myReaderThread.Name = "ReaderThread";
myReaderThread.Start();

for (int i = 1; i <= numIterations; i++)
{
Console.WriteLine("Writer thread writing value: {0}", i);
number = i;

//Signal that a value has been written.
myResetEvent.Set();<