本文整理汇总了C#中System.Windows.Forms.Control.Invoke方法的典型用法代码示例。如果您正苦于以下问题:C# Control.Invoke方法的具体用法?C# Control.Invoke怎么用?C# Control.Invoke使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。
在下文中一共展示了Control.Invoke方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: AddListItem
/*
The following example demonstrates the 'Invoke(Delegate)' method of 'Control class.
A 'ListBox' and a 'Button' control are added to a form, containing a delegate
which encapsulates a method that adds items to the listbox.This function is executed
on the thread that owns the underlying handle of the form. When user clicks on button
the above delegate is executed using 'Invoke' method.
*/
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Threading;
public class MyFormControl : Form
{
public delegate void AddListItem();
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 myItem;
for(int i=1;i<6;i++)
{
myItem = "MyListItem" + i.ToString();
myListBox.Items.Add(myItem);
myListBox.Update();
Thread.Sleep(300);
}
}
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();
}
}
// The following code assumes a 'ListBox' and a 'Button' control are added to a form,
// containing a delegate which encapsulates a method that adds items to the listbox.
public class MyThreadClass
{
MyFormControl myFormControl1;
public MyThreadClass(MyFormControl myForm)
{
myFormControl1 = myForm;
}
public void Run()
{
// Execute the specified delegate on the thread that owns
// 'myFormControl1' control's underlying window handle.
myFormControl1.Invoke(myFormControl1.myDelegate);
}
}
示例2: AddListItem
//引入命名空间
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});
}
}
}