MSDN 的原文 using System; using System.Drawing; using System.Windows.Forms; using System.Threading; public class MyFormControl : Form { public delegate void AddListItem(String myString); public AddListItem myDelegate; private Button myButton; private Thread myThread; private ListBox myListBox; public MyFormControl() { myButton = new Button(); myListBox = new ListBox(); myButton.Location = new Point(72, 160); myButton.Size = new Size(152, 32); myButton.TabIndex = 1; myButton.Text = "Add items in list box"; myButton.Click += new EventHandler(Button_Click); myListBox.Location = new Point(48, 32); myListBox.Name = "myListBox"; myListBox.Size = new Size(200, 95); myListBox.TabIndex = 2; ClientSize = new Size(292, 273); Controls.AddRange(new Control[] {myListBox,myButton}); Text = " 'Control_Invoke' example "; myDelegate = new AddListItem(AddListItemMethod); } static void Main() { MyFormControl myForm = new MyFormControl(); myForm.ShowDialog(); } public void AddListItemMethod(String myString) { myListBox.Items.Add(myString); } private void Button_Click(object sender, EventArgs e) { myThread = new Thread(new ThreadStart(ThreadFunction)); myThread.Start(); } private void ThreadFunction() { MyThreadClass myThreadClassObject = new MyThreadClass(this); myThreadClassObject.Run(); } } public class MyThreadClass { MyFormControl myFormControl1; public MyThreadClass(MyFormControl myForm) { myFormControl1 = myForm; } String myString; public void Run() { for (int i = 1; i <= 5; i++) { myString = "Step number " + i.ToString() + " executed"; Thread.Sleep(400); // Execute the specified delegate on the thread that owns // 'myFormControl1' control's underlying window handle with // the specified list of arguments. myFormControl1.Invoke(myFormControl1.myDelegate, new Object[] {myString}); } } }
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Threading; public class MyFormControl : Form
{
public delegate void AddListItem(String myString);
public AddListItem myDelegate;
private Button myButton;
private Thread myThread;
private ListBox myListBox;
public MyFormControl()
{
myButton = new Button();
myListBox = new ListBox();
myButton.Location = new Point(72, 160);
myButton.Size = new Size(152, 32);
myButton.TabIndex = 1;
myButton.Text = "Add items in list box";
myButton.Click += new EventHandler(Button_Click);
myListBox.Location = new Point(48, 32);
myListBox.Name = "myListBox";
myListBox.Size = new Size(200, 95);
myListBox.TabIndex = 2;
ClientSize = new Size(292, 273);
Controls.AddRange(new Control[] {myListBox,myButton});
Text = " 'Control_Invoke' example ";
myDelegate = new AddListItem(AddListItemMethod);
}
static void Main()
{
MyFormControl myForm = new MyFormControl();
myForm.ShowDialog();
}
public void AddListItemMethod(String myString)
{
myListBox.Items.Add(myString);
}
private void Button_Click(object sender, EventArgs e)
{
myThread = new Thread(new ThreadStart(ThreadFunction));
myThread.Start();
}
private void ThreadFunction()
{
MyThreadClass myThreadClassObject = new MyThreadClass(this);
myThreadClassObject.Run();
}
}
public class MyThreadClass
{
MyFormControl myFormControl1;
public MyThreadClass(MyFormControl myForm)
{
myFormControl1 = myForm;
}
String myString; public void Run()
{
for (int i = 1; i <= 5; i++)
{
myString = "Step number " + i.ToString() + " executed";
Thread.Sleep(400);
// Execute the specified delegate on the thread that owns
// 'myFormControl1' control's underlying window handle with
// the specified list of arguments.
myFormControl1.Invoke(myFormControl1.myDelegate,
new Object[] {myString});
}
}
}