如何实现定时器间隔和启动 [英] How to Implement Timer Interval and Start

问题描述

我想要一种情况，当我启动计时器时，它不会在执行操作之前先按其间隔打勾。例如，我想在单击一个间隔为5秒的按钮后在表单上显示标签文本，而是在单击按钮后，在显示标签文本之前有5秒的延迟。我该如何解决这个问题呢？

代码看起来像这样：

I want a situation that when I start my timer, it doesn't tick at its interval first before performing an action. For example, I want to display a label text on my form after I click a button with a 5 second interval but instead after the button is clicked, there is a 5 second delay before the label text is shown. How can I solve this issue?
Code looks something like this:

private void btnSet_Click(object sender, EventArgs e)
{
   timer1.Enabled = true;
   timer1.Start();
   timer1.Interval = 5000;
}

private void timer1_Tick(object sender, EventArgs e)
{
   label1.Text = "Hello";
}

推荐答案

将您的动作编写为函数并在计时器启动前调用该函数



你的代码可能是这样的

Write your action as a function and call the function before the timer starts

Your code is probably like this

timer.Start();

void timer_click()
{
    // some code
}

将其更改为

change it to

myFunction();
timer.Start();

void timer_click()
{
    myFunction();
}
void myFunction()
{
    // some code
}

尝试使用以下代码：

Try with below code:

private void btnSet_Click(object sender, EventArgs e)
{
   timer1.Enabled = true;
   timer1.Interval = 5000;
   timer1.Tick += new EventHandler(timer1_Tick);
   timer1.Start();
   
}
 
private void timer1_Tick(object sender, EventArgs e)
{
   label1.Text = "Hello";
}

您可以通过声明内联代表来执行此操作：

You can do this by declaring an inline delegate like:

private void btnSet_Click(object sender, EventArgs e)
{
   var t = new Timer();
   t.Interval = 5000;
   t.Tick += (s, e) =>
   {
       label1.Text = "Hello";
       t.Stop();
   };
   t.Start();
}

其中 s，e 两个参数对象发件人，EventArgs e 。

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