如何根据 C# windows 应用程序中的用户条目设置定时器控制？

Question

我需要有关计时器控制的帮助，我想在用户输入后设置时间，即在表单运行的用户在文本框中输入后 10:30 AM 然后标签上的计时器将从 10:30 AM 开始继续..

Answer 1

这是使用基本 BackGroundWorker 将时钟从 WinForms 应用程序中输入的 date/time 提前 60 秒的示例。如果您更愿意使用实际时间，请更改 DateTime begin = DateTime.Parse(textbox_1.Text);到 DateTime 开始 = DateTime.Now; -- 这不是世界上最迷人的解决方案，但无论如何它都能完成工作并且值得考虑。祝你好运！

System.ComponentModel.BackGroundWorker textTime = new System.ComponentModel.BackGroundWorker();// use a reference Using System.ComponentModel; to avoid all this typing
private void button1_Click(object sender, EventArgs e){//this event could be a button click, or whatever else you want to start the process
    textTime.DoWork+= beginTextTimer;
    textTime.RunWorkerAsync();
}
private void beginTextTimer(object sender, DoWorkEventArgs e){
     DateTime begin = DateTime.Parse(textbox_1.Text);//assumes you've already done validation - use DateTime.Now if you don't require user's input
     int totalSeconds = 0;
     While(totalSeconds < 60){
        totalSeconds = DateTime.Now.Subtract(begin).TotalSeconds;//since you're pausing 1 second, you could just increment an integer here rather than doing a DateTime calculation - this works no matter what the pause is
         MethodInvoker mI = () => { 
             textBox_1.Text = begin.AddSeconds(totalSeconds).ToString(); 
         };
         BeginInvoke(mI);//these two lines invoke back to the UI thread to change the textbox value    
         System.Threading.Thread.Sleep(1000);     
      }
}

Answer 2

使用此代码希望对您有所帮助.....

命名空间 WindowsFormsApplication1 { public 部分 class Form1 : 表格 { 静态 Int32 秒 = 0；静态 Int32 分钟 = 0；串 m; 字符串 ; public 表格 1() { 初始化组件(); }

    private void button1_Click(object sender, EventArgs e)
    {
         m = textBox1.Text.Substring(0, 2);
        s = textBox1.Text.Substring(3, 2);
        sec = Convert.ToInt32(s);

        minut = Convert.ToInt32(m);
        timer1.Start();
    }

    private void timer1_Tick(object sender, EventArgs e)
    {

        sec++;
        if(sec>59)
        {
            sec = 1;
            minut++;
        }
        if(minut>59)
        {
            minut = 0;
        }

        label1.Text = minut.ToString() + ":" + sec.ToString();
        //second = second + 1;
        //if (second >= 10)
        //{
        //    timer1.Stop();
        //    MessageBox.Show("Exiting from Timer....");
        //}
    }


}

}

如何根据 C# windows 应用程序中的用户条目设置定时器控制？

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