图2 不带EventArgs的委托演示

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

namespace hackpig
{
    public class myFormControl : Form
    {
        public delegate void addListItem(String str1);
        public addListItem myDelegate;
        p rivate Button myButton;
        p rivate ListBox myListBox;
        p rivate Thread myThread;

        public myFormControl()
        {
            myButton = new Button();
            myListBox = new ListBox();
            myButton.Location = new Point(72, 160);
            myButton.Size = new Size(152, 32);
            myButton.Text = "增加项目到listbox";
            myButton.TabIndex = 1;
            myButton.Click+=new EventHandler(myButton_Click);
            //myButton.Invoke();
            myListBox.Location = new Point(48, 32);
            myListBox.Size = new Size(200, 95);
            myListBox.Name = "list1";
            myListBox.TabIndex = 2;

            ClientSize = new Size(292, 273);
            Controls.AddRange(new Control[] { myButton, myListBox });
            Text = "控件的Invoke的演示程序";
            myDelegate = new addListItem(addListItemMethod);

        }

        public void addListItemMethod(String str1)
        {
            myListBox.Items.Add(str1);
        }

        p rivate void myButton_Click(object sender, EventArgs e)
        {
            myThread = new Thread(new ThreadStart(threadFunction));
            myThread.Start();

        }

        p rivate void threadFunction()
        {
            myThreadClass myThreadClassObject = new myThreadClass(this);
            myThreadClassObject.run();
        }

        static void Main()
        {
            myFormControl myForm = new myFormControl();
            myForm.ShowDialog();
        }
    }

    //=================================
    public class myThreadClass
    {
        myFormControl myFormControl_1;
        public myThreadClass(myFormControl myform)
        {
            myFormControl_1 = myform;
        }

        public void run()
        {
            String str1 = "猪悟能";
            myFormControl_1.Invoke(myFormControl_1.myDelegate,new object[]{str1});
        }
    }

}

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