Question

这是我的代码，但label1在label2之前先运行？我想要的是在各自的线程上同时运行label1和label2。我一直使用线程，但它不能访问控件，除了它自己创建的线程。所以在这段代码中，当我创建实例如：Slave s1 = new Slave(label1); Slave s2 = new Slave(label2);时，它会自动开始移动这两个标签，但不是。

public class Slave
{
    private Label l;
    private BackgroundWorker bw;
    public Slave(Label l)
    {
        this.l = l;
        bw = new BackgroundWorker();
        bw.WorkerReportsProgress = true;
        bw.DoWork+=new DoWorkEventHandler(worknow);
        bw.ProgressChanged += new ProgressChangedEventHandler(update);
        bw.RunWorkerAsync();
    }
    private void worknow(object sender, DoWorkEventArgs e)
    {
        BackgroundWorker b = sender as BackgroundWorker;
        b.ReportProgress(1);
    }
    private void update(object sender, ProgressChangedEventArgs e)
    {
        for(int x=0; x<20;x++)
        {
            l.Top += 10;
            System.Threading.Thread.Sleep(100);
        }
    }

}

Answer 1

好的，我刚刚找到了问题的解决方案，所以我会回答我自己的问题，所以我有一个winform，1个面板和一个按钮这么简单，所以我有一个Animate类，Animate a = new Animate（ PANEL1，startingX，startingY，下一页末，newY）;实例化将在起始位置创建一个节点，并在每按一个按钮一次将其移动到所需的新位置，类节点的定义如下所示：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
   class Node:Label
   {
      public Node(int x, int y)
        {
            this.Top = y;
            this.Left = x;
        }
        public void updatePos(int x, int y)
        {
            this.Top += y;
            this.Left += x;
        }
   }
}

然后这是animate类的定义：

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.Threading;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        Animate a = new Animate(panel1,0,0,1,1); //this is the actual instatiation test
        Animate b = new Animate(panel1, 100, 0,2,2); //for node b

    }

    public class Animate
    {
        private Node l;
        Thread th;
        private delegate void cl(int x, int y);
        Delegate del;
        private int a, b;

        public Animate(Panel p, int x, int y, int a, int b)
        {
            l = new Node(0,0);
            del = new cl(l.updatePos);
            this.a = a;
            this.b = b;

            this.l.AutoSize = true;
            this.l.Location = new System.Drawing.Point(x, y);
            this.l.Name = "label1";
            this.l.Size = new System.Drawing.Size(35, 13);
            this.l.TabIndex = 0;
            this.l.Text = "label1";
            p.Controls.Add(l);

            th = new Thread(thread);
            th.Start();
        }
        private void thread()
        {
            while (true)
            {
                try
                {
                    l.Invoke(del, a, b);
                    Thread.Sleep(100);
                }
                catch (Exception e)
                {
                    return;
                }
            }
        }
    }
}

}

有些人可能想知道我需要什么，我正在尝试使用纯粹的C＃编码winform应用程序来实现二进制搜索树和AVL模拟器，这就是为什么我称标签为“节点”

使用backgroundworker同时向下移动2个标签

1 个答案: