Winforms C#Windows.Forms.Timer无法正常工作

在C#/Windows.Forms上制作模拟钟摆的简单应用程序时，我遇到了一些麻烦

它是一个简单的应用程序，所有后端逻辑都以表单代码的形式出现。 首先，我将间隔设置为100毫秒（第60行），但当我计算圈数（第155行）并显示它时，显示消息：

每秒刷新一次（不是每100毫秒刷新一次）

它的行为是这样的：1-2-4-5-6-8或1-3-4-5-7-8等等

我不知道什么时候开始窃听，我想确定错误

非常感谢你的帮助

using System;
using System.Drawing;
using System.Windows.Forms;

namespace Koban_Lab1
{
public partial class mainWindow : Form
{
    public Point pendFulcrum = new Point(150, 0);
    public Point pendTip = new Point();
    private bool deviceState_;
    private long ticks_;
    private DateTime startTiming;
    private Pen blackPencil;
    public static double g = 9.8;
    public double T;
    public double periodInTicks;
    public double L;
    public double a;
    public double Amp;
    public double startOffset;
    public double w;
    public double periodCounter;
    public double x;
    public double y;
    public double currentAngle;

    private Timer timer_;
    public double t;

    public Bitmap field;

    private long cnt = 0;
    private bool DeviceState
    {
        get
        {
            return deviceState_;
        }
        set
        {
            if (value == deviceState_)
            {
                return;
            }

            deviceState_ = value;
            switch (value)
            {
                case true:
                    L = Convert.ToDouble(pendulumLengthTextBox.Text) / 100;
                    a = Convert.ToDouble(plummetDistanceTextBox.Text) / 100;
                    periodCounter = 0;
                    T = 2 * Math.PI * Math.Sqrt((L * L) / (12 * g * a) + a / g);
                    w = 2 * Math.PI / T;
                    Amp = 2 * Math.PI * L / 24;
                    startOffset = Amp;
                    startTiming = DateTime.Now;
                    timer_ = new Timer();
                    timer_.Interval = 100;
                    timer_.Tick += new EventHandler(tickTimer);
                    timer_.Start();
                    startPendulumButton.Enabled = false;
                    stopPendulumButton.Enabled = true;
                    pendulumLengthTextBox.Enabled = false;
                    plummetDistanceTextBox.Enabled = false;
                    addReadoutButton.Enabled = true;
                    break;
                case false:
                    timer_.Stop();
                    timer_ = null;
                    startPendulumButton.Enabled = true;
                    stopPendulumButton.Enabled = false;
                    pendulumLengthTextBox.Enabled = true;
                    plummetDistanceTextBox.Enabled = true;
                    timerTextBox1.Text = Locale.timerDisabledMessage;
                    timerTextBox2.Text = "0";
                    addReadoutButton.Enabled = false;
                    break;
            }

            return;
        }
    }

    public Graphics fieldGraphics;

    public mainWindow()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        pendulumLengthTooltip.SetToolTip(pendulumLengthTextBox, Locale.pendulumLengthTooltipMessage);
        plummetDistanceTooltip.SetToolTip(plummetDistanceTextBox, Locale.plummetDistanceTooltipMessage);
        blackPencil = Pens.Gray;
        timerTextBox1.Text = Locale.timerDisabledMessage;
        timerTextBox2.Text = "0";
        deleteReadoutButton.Enabled = false;
        DeviceState = false;
        field = new Bitmap(pendulumField.Width, pendulumField.Height);
    }

    private void startPendulumButton_Click(object sender, EventArgs e)
    {
        DeviceState = true;
    }

    private void stopPendulumButton_Click(object sender, EventArgs e)
    {
        DeviceState = false;
    }

    private void addReadoutButton_Click(object sender, EventArgs e)
    {
        if (timerTextBox1.Text == Locale.timerDisabledMessage)
        {
            return;
        }

        readoutList.Items.Add(timerTextBox1.Text);
        deleteReadoutButton.Enabled = true;

        return;
    }

    private void deleteReadoutButton_Click(object sender, EventArgs e)
    {
        if (readoutList.SelectedIndex != (-1))
        {
            readoutList.Items.RemoveAt(readoutList.SelectedIndex);
        }
        else
        {
            readoutList.Items.RemoveAt(readoutList.Items.Count - 1);
        }

        if (readoutList.Items.Count == 0)
        {
            deleteReadoutButton.Enabled = false;
        }
    }



    private void tickTimer(object sender, EventArgs e)
    {
        ticks_ = DateTime.Now.Ticks - startTiming.Ticks;
        timerTextBox1.Text = TimeSpan.FromTicks(ticks_).ToString(@"mm\:ss\:ff");
        timerTextBox2.Text = periodCounter.ToString();

        ticks_ = DateTime.Now.Ticks - startTiming.Ticks;
        t = ticks_ / TimeSpan.TicksPerSecond;
        periodCounter = t / T;
        timerTextBox2.Text = Convert.ToInt32(periodCounter).ToString();


        currentAngle = Amp * Math.Sin(w * t);
        x = x * Math.Cos(currentAngle) - y * Math.Sin(currentAngle);
        y = x * Math.Sin(currentAngle) + y * Math.Cos(currentAngle);

        Program.labWindow.fieldGraphics = Graphics.FromHwnd(Program.labWindow.pendulumField.Handle);
        pendTip.X = (int)x;
        pendTip.Y = (int)y;
        fieldGraphics.DrawLine(blackPencil, pendFulcrum, pendTip);

        pendulumField.Image = field;
        Application.DoEvents();
    }

    private void plummetDistanceTooltip_Popup(object sender, PopupEventArgs e)
    {

    }

    private void plummetDistanceLabel_Click(object sender, EventArgs e)
    {

    }
}
}

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这里有一些要点：1）StackOverflow中没有行号。将代码分成多个部分或添加注释“标签”。2） 计时器是执行周期性操作的一种糟糕方式，因为它们不准确。如果TimerTick代码需要很长时间才能执行，则会扭曲计时。3） 尝试删除与演示问题无关的代码段。4） 你当时对问题的描述不清楚。请更准确和格式更好。我将发布另一个问题，谢谢你，而不是另一个问题，你可以编辑同一个问题