C#中Timer控件的运用实例

本文使用Timer控件制作了一个窗体飘动的程序。

程序设计的思路以及关键步骤的解决方法：

定义两个Timer控件，一个命名为timer1，另外一个命名为timer2。  timer1的作用是控制窗体从左往右飘动，timer2控制窗体从右往左飘动。且两个Timer控件不能同时启动。这里先设定timer1组件启动，当timer1启动后，每隔0.01秒，都会在触发的事件中给窗体的左上角的横坐标都加上"1"，这时我们看到的结果是窗体从左往右不断移动，当移动到一定的位置后，timer1停止。timer2启动，每隔0.01秒，在触发定义的事件中给窗体的左上角的横坐标都减去"1"，这时我们看到的结果是窗体从右往左不断移动。当移动到一定位置后，timer1启动，timer2停止，如此反覆，这样窗体也就飘动起来了。

（1）窗体的初始位置

设定窗体的初始位置，是在事件Form1_Load（）中进行的。此事件是当窗体加载的时候触发的。Form有一个DesktopLocation属性，这个属性是设定窗体的左上角的二维位置。在程序中是通过Point结构变量来设定此属性的值，具体如下：

//设定窗体起初飘动的位置，位置为屏幕的坐标的（0，240）

private void Form1_Load ( object sender , System.EventArgs e )
        {
                Point p = new Point ( 0 , 240 ) ; 
                this.DesktopLocation = p ; 
        }

（2）实现窗体从左往右飘动

设定timer1的Interval值为"10"，就是当timer1启动后，每隔0.01秒触发的事件是timer1_Tick（），在这个事件中编写给窗体左上角的横坐标不断加"1"的代码，就可以了，具体如下：

private void timer1_Tick(object sender, System.EventArgs e) 
        { 
                Point p = new Point ( this.DesktopLocation.X + 1 , this.DesktopLocation.Y ) ; 
                this.DesktopLocation = p ; 
                if ( p.X == 550 ) 
                { 
                        timer1.Enabled = false ; 
                        timer2.Enabled = true ; 
                } 
        }

（3）实现窗体从右往左飘动

代码设计和从左往右飘动差不多，主要的区别是减"1"而不是加"1"了，具体如下：

//当窗体左上角位置的横坐标为-150时，timer2停止，timer1启动

private void timer2_Tick(object sender, System.EventArgs e) 
        {
                Point p = new Point ( this.DesktopLocation.X - 1 , this.DesktopLocation.Y ) ; 
                this.DesktopLocation = p ; 
                if ( p.X == - 150 ) 
                { 
                        timer1.Enabled = true ; 
                        timer2.Enabled = false ; 
                } 
        } 

全部源代码如下：

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace WindowsApplication1
{
///<summary>
/// Form1 的摘要说明。
/// 作者: Shadow
/// 2006-8-3
///</summary>
public class Form1 : System.Windows.Forms.Form
{

private Timer timer1 ;

private Timer timer2 ;

private Label label1 ;

private Button button1 ;
private System.Windows.Forms.Button button2;

private System.ComponentModel.IContainer components ;

private string remarkStatus = "";

public Form1 ( )

{
InitializeComponent ( ) ;
}

protected override void Dispose ( bool disposing )

{

if ( disposing )

{

if ( components != null )

{

components.Dispose ( ) ;

}

}

base.Dispose( disposing ) ;

}


private void InitializeComponent ( )

{
this.components = new System.ComponentModel.Container();
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
this.timer1 = new System.Windows.Forms.Timer(this.components);
this.timer2 = new System.Windows.Forms.Timer(this.components);
this.label1 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// timer1
//
this.timer1.Enabled = true;
this.timer1.Interval = 10;
this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
//
// timer2
//
this.timer2.Interval = 10;
this.timer2.Tick += new System.EventHandler(this.timer2_Tick);
//
// label1
//
this.label1.BackColor = System.Drawing.Color.Transparent;
this.label1.Font = new System.Drawing.Font("华文行楷", 21.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.label1.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(0)), ((System.Byte)(0)), ((System.Byte)(192)));
this.label1.Location = new System.Drawing.Point(16, 88);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(438, 39);
this.label1.TabIndex = 1;
this.label1.Text = "窗 体 动 起 来 喽！";
this.label1.TextAlign = System.Drawing.ContentAlignment.TopCenter;
//
// button1
//
this.button1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
this.button1.Font = new System.Drawing.Font("宋体", 10F);
this.button1.ForeColor = System.Drawing.Color.Blue;
this.button1.Location = new System.Drawing.Point(96, 24);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(96, 27);
this.button1.TabIndex = 0;
this.button1.Text = "停止飘动";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
this.button2.Font = new System.Drawing.Font("宋体", 10F);
this.button2.ForeColor = System.Drawing.Color.Blue;
this.button2.Location = new System.Drawing.Point(368, 24);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(96, 27);
this.button2.TabIndex = 2;
this.button2.Text = "开始飘动";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.B