PDA屏幕截图并保存-优快云博客

这是一个使用C#编写的PDA屏幕截图程序，通过Graphics对象从屏幕获取图像，并将其保存为用户选择的不同格式（BMP, JPG, GIF, PNG）。程序在点击按钮时触发截图，用户可以选择保存位置和文件格式，遇到异常时会显示错误信息。" 100073446,5346699,使用Swift实现UITableView的SearchBar搜索功能,"['IOS开发', 'Swift', 'UI设计', '搜索功能']

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Drawing.Imaging;
using OpenNETCF.Drawing;

namespace Screen
{
    public partial class Form1 : Form
    {
        private string systemPath;

        public Form1()
        {
            InitializeComponent();
         }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                Image image = new Bitmap(480, 640);
                Graphics g = Graphics.FromImage(image);
                GraphicsEx gex = GraphicsEx.FromGraphics(g);
                gex.CopyFromScreen(0,0, 0,0, new Size(480, 640));

                pictureBox1.Image = image;
                SaveFileDialog dlg = new SaveFileDialog();
                dlg.Filter = " bmp file (*.bmp)|*.bmp|jpg file (*.jpg)| *.jpg| gif file(*.gif)|*.gif |png file(*.png)|*.png";
                dlg.FilterIndex = 2;
                string fileName;
                if (dlg.ShowDialog() == DialogResult.OK)
                {

                    fileName = dlg.FileName;
                    fileName = fileName + Getextension(dlg.FilterIndex);
                }
                else
                {
                    return;
                }
                //string fileName = System.IO.Path.Combine(systemPath, "1.png");
                image.Save(fileName, GetFormat(dlg.FilterIndex));

                //image.Save(fileName, ImageFormat.Png);

            }
            catch (Exception ex)
            {
                MessageBox.Show("保存出错：" + ex.StackTrace.ToString());
            }
        }

        /// <summary>
        /// 获取扩展名
        /// </summary>
        /// <param name="i"></param>
        /// <returns></returns>
        public string Getextension(int i)
        {
            switch (i)
            {
                case 1: return ".bmp";
                case 2: return ".jpg";
                case 3: return ".gif";
                case 4: return ".png";
                default: return ".bmp";
            }

        }

        public ImageFormat GetFormat(int i)
        {
            switch (i)
            {
                case 1: return ImageFormat.Bmp;
                case 2: return ImageFormat.Jpeg;
                case 3: return ImageFormat.Gif;
                case 4: return ImageFormat.Png;
                default: return ImageFormat.Bmp;
            }
        }
    }
}

pda截屏