form1.cs

Visual C#2005程序设计教程

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

namespace WinAppPictureBox
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button btnShowPic1;
		private System.Windows.Forms.Button btnShowPic2;
		private System.Windows.Forms.Button btnShowPic3;
		private System.Windows.Forms.PictureBox picBrowse;
		private System.Windows.Forms.Label labPicInfo;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
            this.picBrowse = new System.Windows.Forms.PictureBox();
            this.btnShowPic1 = new System.Windows.Forms.Button();
            this.btnShowPic2 = new System.Windows.Forms.Button();
            this.btnShowPic3 = new System.Windows.Forms.Button();
            this.labPicInfo = new System.Windows.Forms.Label();
            ((System.ComponentModel.ISupportInitialize)(this.picBrowse)).BeginInit();
            this.SuspendLayout();
            // 
            // picBrowse
            // 
            this.picBrowse.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.picBrowse.Image = ((System.Drawing.Image)(resources.GetObject("picBrowse.Image")));
            this.picBrowse.Location = new System.Drawing.Point(13, 10);
            this.picBrowse.Name = "picBrowse";
            this.picBrowse.Size = new System.Drawing.Size(256, 206);
            this.picBrowse.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
            this.picBrowse.TabIndex = 0;
            this.picBrowse.TabStop = false;
            // 
            // btnShowPic1
            // 
            this.btnShowPic1.Location = new System.Drawing.Point(21, 267);
            this.btnShowPic1.Name = "btnShowPic1";
            this.btnShowPic1.Size = new System.Drawing.Size(100, 30);
            this.btnShowPic1.TabIndex = 1;
            this.btnShowPic1.Text = "显示图片1";
            this.btnShowPic1.Visible = false;
            this.btnShowPic1.Click += new System.EventHandler(this.btnShowPic1_Click);
            // 
            // btnShowPic2
            // 
            this.btnShowPic2.Location = new System.Drawing.Point(128, 267);
            this.btnShowPic2.Name = "btnShowPic2";
            this.btnShowPic2.Size = new System.Drawing.Size(100, 30);
            this.btnShowPic2.TabIndex = 2;
            this.btnShowPic2.Text = "显示图片2";
            this.btnShowPic2.Click += new System.EventHandler(this.btnShowPic2_Click);
            // 
            // btnShowPic3
            // 
            this.btnShowPic3.Location = new System.Drawing.Point(245, 278);
            this.btnShowPic3.Name = "btnShowPic3";
            this.btnShowPic3.Size = new System.Drawing.Size(100, 29);
            this.btnShowPic3.TabIndex = 3;
            this.btnShowPic3.Text = "显示图片3";
            this.btnShowPic3.Visible = false;
            this.btnShowPic3.Click += new System.EventHandler(this.btnShowPic3_Click);
            // 
            // labPicInfo
            // 
            this.labPicInfo.AutoSize = true;
            this.labPicInfo.Location = new System.Drawing.Point(117, 226);
            this.labPicInfo.Name = "labPicInfo";
            this.labPicInfo.Size = new System.Drawing.Size(0, 15);
            this.labPicInfo.TabIndex = 4;
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(8, 18);
            this.ClientSize = new System.Drawing.Size(378, 320);
            this.Controls.Add(this.labPicInfo);
            this.Controls.Add(this.btnShowPic3);
            this.Controls.Add(this.btnShowPic2);
            this.Controls.Add(this.btnShowPic1);
            this.Controls.Add(this.picBrowse);
            this.Name = "Form1";
            this.Text = "图片框示例";
            this.Load += new System.EventHandler(this.Form1_Load);
            ((System.ComponentModel.ISupportInitialize)(this.picBrowse)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
			//设置窗体的宽度为450像素，高度为450像素
			this.Width=450;
			this.Height=450;
			//设置图片框相对于窗体的宽度为420像素，高度为330像素
			picBrowse.Width=this.Width-30;
			picBrowse.Height=this.Height-120;
			//设置三个按钮距窗体顶端的距离为相同值
			btnShowPic1.Top=btnShowPic2.Top=btnShowPic3.Top=//380;
				this.Height-btnShowPic1.Height-50;
			//设置三个按钮距窗体左边的距离为相同值，与Top属性相结合使按钮重叠
			btnShowPic1.Left=btnShowPic2.Left=btnShowPic3.Left=//188;
				(this.Width-btnShowPic1.Width)/2;
			//设置标签框距窗体顶端的距离
			labPicInfo.Top=this.Height-labPicInfo.Height-85;
			labPicInfo.Text="当前显示为第一张图片";
			//设置标签框距窗体左边的距离
			labPicInfo.Left=(this.Width-labPicInfo.Width)/2;
			//new关键字用于创建一个实例 Bitmap("f:\\gif\\001.gif");
			//pictureBox1.Image=new Bitmap("f:\\gif\\001.gif"); 
			//pictureBox1.Image = Image.FromFile("f:\\gif\\006.gif");
		}

		private void btnShowPic1_Click(object sender, System.EventArgs e)
		{
			btnShowPic2.Visible=true;
			btnShowPic1.Visible=false;
			picBrowse.Image=new Bitmap("001.gif");
			labPicInfo.Text="当前显示为第一张图片";
		}

		private void btnShowPic2_Click(object sender, System.EventArgs e)
		{
			btnShowPic3.Show( );
			btnShowPic2.Hide( );
			picBrowse.Image=Image.FromFile("004.gif");
			labPicInfo.Text="当前显示为第二张图片";
		}

		private void btnShowPic3_Click(object sender, System.EventArgs e)
		{
			btnShowPic1.Visible=true;
			btnShowPic3.Visible=false;
			picBrowse.Image=new Bitmap("006.gif");
			labPicInfo.Text="当前显示为第三张图片";
		}
	}
}