Silverlight的定时器一样的功能 [英] Silverlight Timer-Like Functionality

问题描述

所以我有一个文本框的数据提交到服务器。

So what I have is a textbox that submits data back to the server.

我想把它提交人一旦停止打字。

I want to have it submit once the person has stopped typing.

我的思维过程是有一个计时器，并具有文本框的变化设置定时器启动（如果已停止），并重新设置倒计时的时间可以说3秒如果已经运行，并有timer.Tick事件提交更改。 ..

My thought process was to have a timer and have the textbox change set the timer to start (if stopped) and reset the countdown time to lets say 3 seconds if its already running and have the timer.Tick event submit the changes...

是否有这样做的更好的方法？

Is there a better method for doing that?

有一个工程？

推荐答案

您可以使用DispatcherTimer做到这一点。刚开始计时器，当文本框获得焦点并且每当keydown事件发生标记指出用户正在输入的变量。是这样的：

You can use a DispatcherTimer to do this. Just start the timer when the textbox gets focus and whenever the keydown event happens mark a variable that notes the user is typing. Something like:

DispatcherTimer timer;
bool typing = false;
int seconds = 0;

public void TextBox_OnFocus(...)
{
  timer = new DispatcherTimer();
  timer.Interval = TimeSpan.FromSeconds(1);
  timer.Tick += new TickEventHandler(Timer_Tick);
  timer.Start();
}

public void TextBox_LostFocus(...)
{
  timer.Stop();
}

public void TextBox_OnKeyDown(...)
{
  typing = true;
}

public void Timer_Tick(...)
{
  if (!typing)
  { 
    seconds++;
  }
  else
  {
    seconds = 0;
  }
  if (seconds >= 3) SubmitData();
  typing = false;
}

我不知道这是最好的办法（提交这样的数据），但它应该工作。请注意，这只是伪code。

I'm not sure this is the best approach (submitting data like this) but it should work. Note this is psuedo code only.

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