winform 垂直交错效果显示图像 例子

   
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Linq;using System.Windows.Forms;namespace UprightnessInterleaving{ public partial class Frm_Main : Form { Bitmap myBitmap; public Frm_Main() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { openFileDialog1.Filter = "*.jpg,*.jpeg,*.bmp|*.jpg;*.jpeg;*.bmp";//设置文件的类型 openFileDialog1.ShowDialog(); //打开文件对话框 Image myImage = System.Drawing.Image.FromFile(openFileDialog1.FileName); //根据文件的路径实例化Image类 myBitmap = new Bitmap(myImage); //实例化Bitmap类 this.BackgroundImage = myBitmap; //显示打开的图片 } private void button2_Click(object sender, EventArgs e) { try { int intWidth = this.BackgroundImage.Width;//获取背景片的宽度 int intHeight = this.BackgroundImage.Height;//获取背景片的高度 Graphics myGraphics = this.CreateGraphics(); //创建窗体的Graphics类 myGraphics.Clear(Color.WhiteSmoke); //以指定的颜色清除 Bitmap bitmap = new Bitmap(intWidth, intHeight); //实例化Bitmap类 int i = 0; //通过调用Bitmap对象的SetPixel方法实现垂直交错效果显示图像 while (i <= intHeight / 2) { for (int m = 0; m <= intWidth - 1; m ) { bitmap.SetPixel(m, i, myBitmap.GetPixel(m, i));//设置当前象素的颜色值 } for (int n = 0; n <= intWidth - 1; n ) { bitmap.SetPixel(n, intHeight - i - 1, myBitmap.GetPixel(n, intHeight - i - 1)); //设置当前象素的颜色值 } i ; this.Refresh();//工作区无效 this.BackgroundImage = bitmap; //显示垂直交错的图片 System.Threading.Thread.Sleep(10);//线程挂起 } } catch { } } }}