c# 定周期的几种方案

1.不依赖ui 的方案

1.1 Threading.Timer

1.1.1代码

using System;
using System.Threading;

namespace _4种定时器
{
    class Program
    {
        int index = 0;
        static void Main(string[] args)
        {
            Console.WriteLine("_4种定时器-System.Threading.Timer");
            Program p = new Program();
            p.main();
            Console.ReadKey();
        }
        private void main()
        {
            //5000毫秒后执行，间隔200毫秒
            System.Threading.Timer timer = new System.Threading.Timer(new TimerCallback(timerCall), this, 1000, 200);//创建定时器
        }
        private void timerCall(object obj)
        {
            Console.WriteLine(index++);
            //timer.Dispose();//释放定时器
        }
    }
}

1.1.2 运行效果

 1.2 System.Timers.Timer

1.2.1 代码

using System;
using System.Threading;

namespace _4种定时器
{
    class Program
    {
        int index = 0;
        static void Main1(string[] args)
        {
            Console.WriteLine("_4种定时器-System.Threading.Timer");
            Program p = new Program();
            p.main();
            Console.ReadKey();
        }
        private void main()
        {
            //5000毫秒后执行，间隔200毫秒
            System.Threading.Timer timer = new System.Threading.Timer(new TimerCallback(timerCall), this, 1000, 200);//创建定时器
        }
        private void timerCall(object obj)
        {
            Console.WriteLine(index++);
            //timer.Dispose();//释放定时器
        }
    }
}

1.2.2 运行效果

 2.依赖ui 线程的方法

2.1 System.Windows.Forms.Timer

2.1.1 代码

using System;
using System.Windows.Forms;

namespace _4种定时器
{
    public class System_Windows_Forms_Timer
    {
        static void Main(string[] args)
        {
            Console.WriteLine("_4种定时器 System_Windows_Forms_Timer");
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new MyForm());
            Console.ReadKey();
        }
    }
    public class MyForm : Form
    {
        private System.ComponentModel.IContainer components = null;
        
        private int index = 0;
        System.Windows.Forms.Timer timer;//创建定时器
        public MyForm()
        {
            main();
        }
        private void main()
        {
            this.components = new System.ComponentModel.Container();
            timer = new System.Windows.Forms.Timer(components);//创建定时器
            timer.Tick += new EventHandler(timer1_Tick);//事件处理
            //timer.Enabled = true;//设置启用定时器
            //timer.Interval = 500;//执行时间
            timer.Start();//开启定时器
        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            Console.WriteLine(index++);
            //timer.Stop();//停止定时器
            // timer.Tick -= new EventHandler(timer1_Tick);//取消事件
            // timer.Enabled = false;//设置禁用定时器
        }
    }
}

2.1.2  运行效果

2.2 System.Windows.Threading.DispatcherTimer

2.2.1 代码

2.2.1.1 程序代码

using System;
using System.Windows;

namespace 窗体定时器WPF
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        int index = 0;
        private static System.Windows.Threading.DispatcherTimer timer = new System.Windows.Threading.DispatcherTimer();
        public MainWindow()
        {
            InitializeComponent();
            initTime();
        }
        
        private void initTime()
        {
            timer.Tick += new EventHandler(timer_out);//执行事件
            timer.Interval = new TimeSpan(0, 0, 0, 1);//1s执行
            timer.IsEnabled = true;//启用
            timer.Start();//开启
        }
        public void timer_out(object sender, EventArgs e)
        {
            textBox1.Text = (index++).ToString();
            //timer.Tick -= new EventHandler(timer_out);//取消执行事件；   
            //timer.IsEnabled = false;//禁用 
            //timer.Stop();//停止
        }
    }
}

2.2.1.2 view 代码

<Window x:Class="窗体定时器WPF.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:窗体定时器WPF"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <TextBox x:Name="textBox1" HorizontalAlignment="Left" Height="23" Margin="390,185,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="120"/>

    </Grid>
</Window>

2.2.2 运行效果