C#图片添加picturebox用法.doc

C#关于picturebox和imagelist的用法using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace TExt1 public partial class Form1 : Form public Form1() InitializeComponent(); int i; /系统当前有一张默认图片 private void Form1_Load(object sender, EventArgs e) if (imageList1.Images.Count = 1) pictureBox1.Image = imageList1.Images0; i = -1; /增加图片 private void button1_Click(object sender, EventArgs e) OpenFileDialog ofd = new OpenFileDialog(); ofd.InitialDirectory = E:; ofd.Filter = 图像|*.jpg; ofd.RestoreDirectory = true; ofd.FilterIndex = 1; String fName; if (ofd.ShowDialog() = DialogResult.OK) fName = ofd.FileName; Image myImage = Image.FromFile(fName, true); imageList1.Images.Add(myImage); i+; pictureBox1.Image = imageList1.Imagesi; /删除当前图片 private void button2_Click(object sender, EventArgs e) /图片数量大于1 if (imageList1.Images.Count = 1&i=0) imageList1.Images.RemoveAt(i); /i-; /判断图片是否为空 if (imageList1.Images.Count = 0) pictureBox1.Image = null; i = -1; else pictureBox1.Image = imageList1.Imagesi; /图片为空时不显示 else this.addTitle(); /显示下一张图片 private void button3_Click(object sender, EventArgs e) if (imageList1.Images.Count = 1) if (imageList1.Images.Count = 1) MessageBox.Show(只有一张图片); i+; if (i imageList1.Images.Count-1) i = 0; pictureBox1.Image = imageList1.Imagesi; /清空所有的图片 private void button4_Click(object sender, EventArgs e) DialogResult result = MessageBox.Show(确定清空？, 提示信息, MessageBoxButtons.OKCancel, MessageBoxIcon.Information); if (DialogResult.OK = result) imageList1.Images.Clear(); pictureBox1.Image = null; i = -1; this.addTitle(); /退出 private void button5_Click(object sender, EventArgs e) Application.Exit(); /定义函数当图片为空时点击确定添加图片 private void addTitle() DialogResult sel = MessageBox.Show(图片为空,请选择一张图片，点击确定添加图片，否则点击取消！, 信息提示, MessageBoxButtons.OKCancel, MessageBoxIcon.Information); if (sel = DialogResult.OK) OpenFileDialog ofd = new OpenFileDialog(); ofd.InitialDirectory = E:; ofd.Filter = 图像|*.jpg; ofd.RestoreDirectory = true; ofd.FilterIndex = 1; String fName; if (ofd.ShowDialog() = DialogResult.OK) fName = ofd.FileName; Image myImage = Image.FromFile(fName, true); imageList1.Ima