- 设置NTP服务器:
NTP是网络时间协议(Network Time Protocol),它是用来同步网络中各个计算机的时间的协议。
局域网不能连接Internet,可以设置一台计算机为NTP服务器。
- 依次点击:开始---运行---regedit,进入注册表;
- 依次展开:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpServer,在NtpServer项右侧键值Enablied,默认值0改为1,1为启动NTP服务器;
- 依次展开:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config,在Config项右侧键值AnnounceFlags,默认值10改为5,5代表自身为可靠时间源;
- 修改完成以上关闭注册表;
- 命令行输入:net stop w32Time,回车,停止NTP服务;
- 命令行输入:net start w32Time,回车,启动NTP服务;
- 当前计算机设置NTP服务器完成。
- 局域网内其他电脑命令行输入:net time \\10.30.100.119 /set /yes,实现时间同步,其中10.30.100.119代表NTP服务器地址。
- C# Winform实现局域网时间同步demo:
全局变量:
//Timer
System.Timers.Timer timer = new System.Timers.Timer();
//IP
private string ipAddress;
//时间间隔
private int timeInterval;
//创建bat文件路径,如果存在,直接覆盖
private string filePath = System.Environment.CurrentDirectory + @"\timesync.bat";
页面Load方法:
private void FrmMain_Load(object sender,EventArgs e)
{
//运行标志隐藏
picRun.Visible = false;
}
Run/Abort按钮点击事件:
private void btnRunAbort_Click(object sender,EventArgs e)
{
//IP
ipAddress = txtIP.Text.Trim();
//Time Interval
timeInterval = Convert.ToInt32(txtTimeInterval.Text); if (btnRunAbort.Text.Equals("开始同步"))
{
this.RunTimer();
}
else if (btnRunAbort.Text.Equals("停止同步"))
{
//定时器停止
timer.Stop();
timer = new System.Timers.Timer(); MessageBox.Show("停止同步成功","提示"); //运行标志隐藏
picRun.Visible = false;
btnRunAbort.Text = "开始同步";
}
}
开始同步执行方法:
public void RunTimer()
{
//创建bat文件
FileStream fs = new FileStream(filePath, FileMode.Create,FileAccess.Write);
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine(string.Format(@"net time \\{0} /set /yes",ipAddress));
sw.Close();
fs.Close(); try
{
//执行时间超过10秒,强制结束
if (!CallWithTimeOut(CommonRun,))
{
MessageBox.Show("服务器异常!","提示");
return;
}
//服务器地址异常
if (StringRun().EndsWith(@"/yes"))
{
MessageBox.Show("服务器异常!","提示");
return;
} MessageBox.Show("开始同步成功!","提示");
//BeginInvoke
SetPBState(true , "停止同步");
}
catch (Exception ex)
{
MessageBox.Show("服务器异常!","提示");
return;
} //timer定时器执行时间同步
timer.Elapsed += new System.ElapsedEventHandle(TimerRun);
timer.Enabled = true;
timer.Interval = Convert.ToInt32(txtTimeInterval.Text) * ;
timer.Start();
}
时间同步,返回执行bat输出:
private string StringRun()
{
ProcessStartInfo pro = new ProcessStartInfo("cmd.exe");
pro.UseShellExecute = false;
pro.RedirectStandardOutput = true;
pro.RedirectStandardError = true;
pro.CreateNoWindow = true;
pro.FileName = filePath;
pro.WorkingDirectory = System.Environment.CurrentDirectory;
Process proc = new Process.Start(pro); StreamReader sOutput = proc.StandardOutput;
proc.Close(); string sJudge = sOutput.ReadToEnd().Trim();
sOutput.Close(); return sJudge;
}
时间同步:
private void CommonRun()
{
ProcessStartInfo pro = new ProcessStartInfo("cmd.exe");
pro.UseShellExecute = false;
pro.RedirectStandardOutput = true;
pro.RedirectStandardError = true;
pro.CreateNoWindow = true;
pro.FileName = filePath;
pro.WorkingDirectory = System.Environment.CurrentDirectory;
Process proc = new Process.Start(pro); StreamReader sOutput = proc.StandardOutput;
proc.Close(); string sJudge = sOutput.ReadToEnd().Trim();
sOutput.Close();
}
timer定时器时间同步:
private void TimerRun(object source , System.Timers.ElapsedEventArgs e)
{
ProcessStartInfo pro = new ProcessStartInfo("cmd.exe");
pro.UseShellExecute = false;
pro.RedirectStandardOutput = true;
pro.RedirectStandardError = true;
pro.CreateNoWindow = true;
pro.FileName = filePath;
pro.WorkingDirectory = System.Environment.CurrentDirectory;
Process proc = new Process.Start(pro); StreamReader sOutput = proc.StandardOutput;
proc.Close(); string sJudge = sOutput.ReadToEnd().Trim();
sOutput.Close();
}
deletegate InvokeRequired:
delegate void DelegatePBUpdate(bool b , string btnText); public void SetPBState(bool b , string btnText)
{
if (this.InvokeRequired)
{
this.BeginInvoke(new DelegatePBUpdate(SetPBState), new object[] {b , btnText});
}
else
{
picRun.Visible = true;
btnRunAbort.Text = "停止同步";
}
}
方法执行时间超过设定值,强制结束:
static bool CallWithTimeout(Action action, int timeoutMilliseconds)
{
Thread threadToKill = null;
Action wrappedAction = () =>
{
threadToKill = Thread.CurrentThread;
action();
} IAsyncResult result = wrappedAction.BeginInvoke(null, null);
if (result.AsyncWaitHandle.WaitOne(timeoutMilliseconds))
[
wrappedAction.EndInvoke(result);
return true;
]
else
{
threadToKill.Abort();
return false;
}
}
- 运行结果: