Monitor類的TryEnter()方法非常類似于Enter()方法,他試圖獲得對(duì)象的獨(dú)占鎖,不過(guò)它不會(huì)象Enter()方法那樣暫停. 如果線程成功進(jìn)入,則TryEnter()方法返回True.
TryEnter()有3種重載方法,其中兩個(gè)都帶有超時(shí)參數(shù),表示等待鎖定的時(shí)間.

using System;
using System.Threading;

namespace MonitorTryEnter
{
public class TryEnter
{
public TryEnter()
{
}

public void CriticalSection()
{
bool b=Monitor.TryEnter(this,1000);
Console.WriteLine("Thread "+Thread.CurrentThread.GetHashCode()+" TryEnter Value "+b);
for(int i=1;i<=3;i++)
{
Thread.Sleep(1000);
Console.WriteLine(i+" "+Thread.CurrentThread.GetHashCode()+" ");
}
Monitor.Exit(this);
}

public static void Main()
{
TryEnter a=new TryEnter();
Thread t1=new Thread(new ThreadStart(a.CriticalSection));
Thread t2=new Thread(new ThreadStart(a.CriticalSection));
t1.Start();
t2.Start();
}
}
}
運(yùn)行結(jié)果:



在可能發(fā)生競(jìng)爭(zhēng),但不希望線程睡眠某個(gè)未指定的時(shí)間時(shí),就可以使用TryEnter().