C#图片查看器实现方法

实现效果：

注意：using system.io; 往Form1上添加控件picturebox，再添加imagelist，并设置imagelist的imagesize大小

Form1.cs代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace ImageCheck
{
public partial class Form1 : Form
{
 public Form1()
 {
  InitializeComponent();
 }
 int index;
 private void button1_Click(object sender, EventArgs e)
 {
  index--;
  if (index<0)
  {
   MessageBox.Show("去往最后一张图片");
   index = imageList1.Images.Count - 1;
  }
  this.pictureBox1.Image = this.imageList1.Images[index];
 }

private void button2_Click(object sender, EventArgs e)
 {
  index++;
  if (index>imageList1.Images.Count-1)
  {
   MessageBox.Show("回到第一张图片");
   index = 0;
  }
  this.pictureBox1.Image = this.imageList1.Images[index];
 }

private void LoadImage()
 {
  string rootPath = Application.StartupPath;
  string filePath = rootPath + @"\image";
  DirectoryInfo rootDir = new DirectoryInfo(filePath);
  FileInfo[] file = rootDir.GetFiles();
  for (int i=0;i<=file.Length-1;i++)
  {
   Image img = Image.FromFile(file[i].FullName);
   this.imageList1.Images.Add(img);
  }
 }

private void Form1_Load(object sender, EventArgs e)
 {
  LoadImage();
  this.pictureBox1.Image = this.imageList1.Images[index];
 }
}
}

注意：在C#的工作目录Debug下创建image文件夹，并放置图片

来源：https://www.idaobin.com/archives/985.html