目录

一 原型

二 源码

---

一 原型

二 源码

namespace 图片查看器
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //默认显示第一张图片
            pictureBox1.Image = imageList1.Images[0];
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int index = new Random().Next(0, imageList1.Images.Count);
            pictureBox1.Image = imageList1.Images[index];
        }

        private void button2_Click(object sender, EventArgs e)
        {
            int index = new Random().Next(0, imageList1.Images.Count);
            pictureBox1.Image = imageList1.Images[index];
        }
    }
}

设计器自动生成的代码：

namespace 图片查看器
{
    partial class Form1
    {
        /// <summary>
        ///  Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        ///  Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        ///  Required method for Designer support - do not modify
        ///  the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            components = new System.ComponentModel.Container();
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
            pictureBox1 = new PictureBox();
            button1 = new Button();
            button2 = new Button();
            imageList1 = new ImageList(components);
            ((System.ComponentModel.ISupportInitialize)pictureBox1).BeginInit();
            SuspendLayout();
            // 
            // pictureBox1
            // 
            pictureBox1.Location = new Point(3, 59);
            pictureBox1.Name = "pictureBox1";
            pictureBox1.Size = new Size(841, 634);
            pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
            pictureBox1.TabIndex = 0;
            pictureBox1.TabStop = false;
            // 
            // button1
            // 
            button1.Location = new Point(155, 24);
            button1.Name = "button1";
            button1.Size = new Size(94, 29);
            button1.TabIndex = 1;
            button1.Text = "下一张";
            button1.UseVisualStyleBackColor = true;
            button1.Click += button1_Click;
            // 
            // button2
            // 
            button2.Location = new Point(271, 25);
            button2.Name = "button2";
            button2.Size = new Size(94, 29);
            button2.TabIndex = 2;
            button2.Text = "上一张";
            button2.UseVisualStyleBackColor = true;
            button2.Click += button2_Click;
            // 
            // imageList1
            // 
            imageList1.ColorDepth = ColorDepth.Depth32Bit;
            imageList1.ImageStream = (ImageListStreamer)resources.GetObject("imageList1.ImageStream");
            imageList1.TransparentColor = Color.Transparent;
            imageList1.Images.SetKeyName(0, "B.png");
            imageList1.Images.SetKeyName(1, "C#.png");
            imageList1.Images.SetKeyName(2, "C++.png");
            imageList1.Images.SetKeyName(3, "python.png");
            imageList1.Images.SetKeyName(4, "QML.png");
            imageList1.Images.SetKeyName(5, "Qt.png");
            imageList1.Images.SetKeyName(6, "Qt头.png");
            imageList1.Images.SetKeyName(7, "unity.png");
            imageList1.Images.SetKeyName(8, "winform.png");
            imageList1.Images.SetKeyName(9, "程序.png");
            // 
            // Form1
            // 
            AutoScaleDimensions = new SizeF(9F, 20F);
            AutoScaleMode = AutoScaleMode.Font;
            ClientSize = new Size(856, 705);
            Controls.Add(button2);
            Controls.Add(button1);
            Controls.Add(pictureBox1);
            MaximizeBox = false;
            Name = "Form1";
            Text = "图片查看器";
            Load += Form1_Load;
            ((System.ComponentModel.ISupportInitialize)pictureBox1).EndInit();
            ResumeLayout(false);
        }

        #endregion

        private PictureBox pictureBox1;
        private Button button1;
        private Button button2;
        private ImageList imageList1;
    }
}