Question

我的计时器不会打勾，我已尝试打印以检查计时器是否已启动，它会启动，但它永远不会打勾。这是代码：

   public Form1()
    {
        InitializeComponent();
        this.DoubleBuffered = true;
        timer = new Timer();
        timer.Enabled = true;
        timer.Interval = 50;
        timer.Tick += new EventHandler(timer_Tick);
        //Console.WriteLine("STARTING TIMER");
        timer.Start();
        NewFile();

    }

    private void timer_Tick(object sender, EventArgs e)
    {
        MessageBox.Show("TIMER TICKS");

        doc.MoveBalls(leftX, topY, width, height);
        doc.CheckCollision();
        Invalidate(true);

        Console.WriteLine("Moving2");
    }

Answer 1

您在附加QByteArray事件之前启用了计时器。将OnTick设置为true与Enabled基本相同。删除已启用的分配，或用它替换Start（）调用。

Answer 2

除了上面给出的答案之外，您还可以使用Timer的一个线程来获取回调和一个状态对象来保持您的工作线程安全，如下所示

在命名空间之前包含库

using System.Threading;

//你的命名空间

        private readonly TimeSpan _updateInterval = TimeSpan.FromSeconds(10);

        private Timer _timer = new Timer(CallBakFunction, null, _updateInterval, _updateInterval);
        private void CallBakFunction(object state)
        {

        }

在您的情况下，可以按照以下方式完成：

private readonly TimeSpan _updateInterval = TimeSpan.FromSeconds(10);
private Timer _timer ;
public Form1()
{
    InitializeComponent();
    this.DoubleBuffered = true;
  _timer = new Timer(timer_Tick, null, _updateInterval, _updateInterval);

    NewFile();

}
      private void timer_Tick(object state)
{
    MessageBox.Show("TIMER TICKS");

    doc.MoveBalls(leftX, topY, width, height);
    doc.CheckCollision();
    Invalidate(true);

    Console.WriteLine("Moving2");
}

我已更新final result video以获取您的帮助，请查看以下内容：

    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;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        private readonly TimeSpan _updateInterval = TimeSpan.FromSeconds(1);
        private System.Threading.Timer _timer;
        public Form1()
        {
            InitializeComponent(); this.DoubleBuffered = true;
            _timer = new System.Threading.Timer(timer_Tick, null, _updateInterval, _updateInterval);

            NewFile();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
        private void NewFile() { }
        private void timer_Tick(object state)
        {
            MessageBox.Show("TIMER TICKS");

            //doc.MoveBalls(leftX, topY, width, height);
            //doc.CheckCollision();
            //Invalidate(true);

            Console.WriteLine("Moving2");
        }
    }
}

Answer 3

使用System.Windows.Forms.Timer使用winform

   public Form1()
    {
        InitializeComponent();
        this.DoubleBuffered = true;
        System.Windows.Forms.Timer timer = new Timer();
        timer.Enabled = true;
        timer.Interval = 50;
        timer.Tick += new EventHandler(timer_Tick);
        //Console.WriteLine("STARTING TIMER");
        timer.Start();

    }

我的计时器不会勾选c＃

3 个答案: