我如何在C＃中定时 [英] How Do I Timer In C#

问题描述

大家好我再次请有人可以帮助我今天我需要这个muhc，我做了这个我可以用按钮打开和关闭cd / rw但是我想用计时器做这个，计时器运行每5秒开一次关闭请帮忙！

hi everyone i am again please someone can help me today i need this so muhc , i made this i can open and close cd/rw with button but ı want to make this with timer, the timer run every 5 second opening and closing please help!

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Management;
using System.Runtime.InteropServices;
namespace cd_surucu_acma  
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
[DllImport("winmm.dll", EntryPoint = "mciSendStringA", CharSet = CharSet.Ansi)]
public static extern int cdKapakAc(string icerik, StringBuilder durum, int deger, IntPtr neKadar);
private void btnAc_Click(object sender, EventArgs e)
{
cdKapakAc("Set cdaudio door open wait ", null, 0, IntPtr.Zero);
}
[DllImport("winmm.dll", EntryPoint = "mciSendStringA", CharSet = CharSet.Ansi)]
public static extern int cdKapakKapat(string icerik, StringBuilder durum, int deger, IntPtr neKadar); //CD kapat

private void btnKapat_Click(object sender, EventArgs e)

{

cdKapakKapat("Set cdaudio door Closed wait ", null, 0, IntPtr.Zero);

}

}

}//thank you so much codeprojct family

推荐答案

以下是c＃中定时器教程的链接/>
http://www.dotnetperls.com/timer [ ^ ]



这段代码有效（基于你的原创） - 它没有打开我的CD抽奖

Here is a link to a tutorial on timers in c#
http://www.dotnetperls.com/timer[^]

This code sort of works (based on your original) - it doesn't open my CD draw though

public Form1()
{
    InitializeComponent();
    System.Timers.Timer t = new System.Timers.Timer();
    t.Interval = 5000;
    t.Elapsed += new ElapsedEventHandler(telapsed);
    t.Enabled = true;

}
public static void telapsed(object sender, ElapsedEventArgs e)
{
    cdKapakKapat("Set cdaudio door Closed wait ", null, 0, IntPtr.Zero);
}

我改进了你的代码。



我添加了两个计时器和我将它命名为tmrOpen和tmrClose并将两者属性设置为;



启用= false

间隔= 5000



因为1000相当于1秒

我还添加了开始按钮来启动tmrOpen我让tmrOpen启动tmrClose，反之亦然。



希望对您有所帮助。

I refined your code.

I added two timer and I named it to tmrOpen and tmrClose and set the both property into;

Enabled = false
Interval = 5000

because 1000 is equivalent to 1 second
I also add Start button to start the tmrOpen and I let tmrOpen to start the tmrClose and vice versa.

Hope it helps to you.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Management;
using System.Runtime.InteropServices;

namespace OpenCloseCD_Device
{
    public partial class frmCDDrives : Form
    {
        public frmCDDrives()
        {
            InitializeComponent();
        }

        //********* Declare Variables etc. *****************
        [DllImport("winmm.dll", EntryPoint = "mciSendStringA", CharSet = CharSet.Ansi)]
        public static extern int cdKapakAc(string icerik, StringBuilder durum, int deger, IntPtr neKadar);

        [DllImport("winmm.dll", EntryPoint = "mciSendStringA", CharSet = CharSet.Ansi)]
        public static extern int cdKapakKapat(string icerik, StringBuilder durum, int deger, IntPtr neKadar);
        //**************************>>>>>>>>>>>>>>>>>>>>>>>>>


        private void btnStart_Click(object sender, EventArgs e)
        {
            tmrOpen.Enabled = true;
        }



        private void tmrOpenClose_Tick(object sender, EventArgs e)
        {
            cdKapakAc("Set cdaudio door open wait ", null, 0, IntPtr.Zero);
            tmrClose.Enabled = true;
            tmrOpen.Enabled = false;

        }

        private void tmrClose_Tick(object sender, EventArgs e)
        {
            cdKapakKapat("Set cdaudio door Closed wait ", null, 0, IntPtr.Zero);
            tmrOpen.Enabled = true;
            tmrClose.Enabled = false;
        }
    }
}

另请参阅此CodeProject文章： .NET Framework的多媒体计时器 [ ^ ]。

-SA

See also this CodeProject article: The Multimedia Timer for the .NET Framework[^].

—SA

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