Question

我有两个跟踪条做同样的事情，除了一个用于左执行器，一个用于右边。我想在我的GUI中添加同步轨迹栏的选项，以便用户可以选择以相同的方式控制两个执行器。现在，问题是轨道栏会在我第一次尝试时同步，但随后两个句柄都会冻结。这是我的代码：

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.IO.Ports;

namespace GUI1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            this.slider1.Minimum = 0;
            this.slider1.Maximum = 9;
            this.slider2.Minimum = 0;
            this.slider2.Maximum = 9;

        }
        //ends public form1



        private void Form1_Load(object sender, EventArgs e)
        {


        }




        //starts first slider
        private void slider1_Scroll(object sender, EventArgs e)
        {
            System.Windows.Forms.TrackBar slider1;
            slider1 = (System.Windows.Forms.TrackBar)sender;
            textBox1.Text = "" + slider1.Value.ToString();
            if (syncOption.Checked == true)
            {
                slider1.Value = Convert.ToInt32(slider2.Value);
                textBox1.Text = slider1.Value.ToString();
            }

        }//ends first slider



        //starts second slider
        private void slider2_Scroll(object sender, EventArgs e)
        {
            System.Windows.Forms.TrackBar slider2;
            slider2 = (System.Windows.Forms.TrackBar)sender;
            textBox2.Text = "" + slider2.Value.ToString();
            if (syncOption.Checked == true)
            {
                slider2.Value = Convert.ToInt32(slider1.Value);
                textBox2.Text = slider2.Value.ToString();
            }

        }//ends second slider




    }

}

感谢您的帮助！

Answer 1

您的问题很简单，当您移动slider1时，您将其值设置为代码中slider2的值;相反，你应该移动slider1 然后设置slider2的值;

    private void slider1_Scroll(object sender, EventArgs e) 
    { 
        System.Windows.Forms.TrackBar slider1; 
        slider1 = (System.Windows.Forms.TrackBar)sender; 
        textBox1.Text = "" + slider1.Value.ToString(); 
        if (syncOption.Checked == true) 
        { 
            slider2.Value = Convert.ToInt32(slider1.Value); 
            textBox2.Text = slider2.Value.ToString(); 
        } 

    }//

Slider2相同：

    private void slider2_Scroll(object sender, EventArgs e)    
    {    
        System.Windows.Forms.TrackBar slider2;    
        slider2 = (System.Windows.Forms.TrackBar)sender;    
        textBox2.Text = "" + slider2.Value.ToString();    
        if (syncOption.Checked == true)    
        {    
            slider1.Value = Convert.ToInt32(slider2.Value);    
            textBox1.Text = slider1.Value.ToString();    
        }    

    }

你的同步逻辑只是错误的方式！

使用Winforms，VS2010进行测试。

修改

请注意，您实际上可以为两个滑块使用单个事件处理程序，例如：

private void Slider_Scroll(object sender, EventArgs e) { TrackBar sourceSlider; TextBox sourceText; TrackBar targetSlider; TextBox targetText; sourceSlider = sender == trackBar1 ? trackBar1 : trackBar2; targetSlider = sender == trackBar1 ? trackBar2 : trackBar1; sourceText = sender == trackBar1 ? textBox1 : textBox2; targetText = sender == trackBar1 ? textBox2 : textBox1; sourceText.Text = Convert.ToString(sourceSlider.Value); if (syncOption.Checked) { targetSlider.Value = sourceSlider.Value; targetText.Text = Convert.ToString(targetSlider.Value); } }

您可以在设计器中或在代码中（在构造函数或Load事件中）连接，如：

trackBar1.Scroll += Slider_Scroll; trackBar2.Scroll += Slider_Scroll;

C＃Winforms APP-同步两个轨道栏

1 个答案: