计时器 - 经过特定时间后显示消息 [英] Timer - Show a message after a specific time has passed

问题描述

我的表单上有一个计时器，它显示当前时间(基于我的系统)我想要做的是例如当前时间是6:22 PM"所以当它到达6:24 PM"时它应该显示一条消息您必须提交报告"我该怎么做?这是我的代码.

I have got a timer on my form like and it shows the current time (based on my system) what i want to do is for example current time is "6:22 PM" so when it reaches "6:24 PM" it should show a Message as "You have to submit a report" how do i do? Here is my code.

 private void timer1_Tick(object sender, EventArgs e)
    {
        label1.Text = DateTime.Now.ToString("MM-dd-yyyy hh:mm:ss tt");
    }

这只是显示当前时间.有人可以帮我处理这个消息框"吗?

This just shows the current time.Can someone help me on this "message box"?

推荐答案

timer1 的时间间隔是多少?可能是 1000 毫秒，即 1 秒.假设1秒时间间隔，添加条件

what is time interval of timer1 ? Probably its 1000 ms i.e. 1 sec. Assuming 1 sec time interval, add a condition

private DateTime showOnDate = DateTime.Today;
private void timer1_Tick(object sender, EventArgs e)
{
    label1.Text = DateTime.Now.ToString("MM-dd-yyyy hh:mm:ss tt");
    if (DateTime.Now.Hour == 18 && DateTime.Now.Minute == 24 && showOnDate == DateTime.Today)
    {
        showOnDate = DateTime.Today.AddDays(1);
        MessageBox.Show("You have to submit a report");
    }
}

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