定时自动抓屏小程序

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

namespace ScreenLog
{
    public partial class Form1 : Form
    {
        //subDirectory
        private string subDirection = "";

        private Bitmap MyImage = null; 
 
        //记录旧的时间
        private DateTime dtOld = new DateTime();

        //记录旧的时间+时间段 之和
        private DateTime dtTemp = new DateTime();

 

        public Form1()
        {
            InitializeComponent();
        }

        #region "初始化页面 Form1_Load"
        /*
         * 功能：
         *
         */
        private void Form1_Load(object sender, EventArgs e)
        {
            //show the notifyIcon1
            notifyIcon1.Visible = true;
            //inital the old time
            dtOld = DateTime.Now;
            textBox1.Text = Application.StartupPath;
            setSubDirectory();
            //start the capture once
            capture();
            //display the old time
            lblLastTime.Text = dtOld.ToShortTimeString();
        }
        #endregion

        #region "刷新时间、拍照 button2_Click"
        /*
         * 功能：
         *
         */
        private void button2_Click(object sender, EventArgs e)
        {
            dtOld = DateTime.Now;
            capture();
            //定时器重开
            //timer1.Stop();
            //timer1.Start();
           
            //display the old time
            lblLastTime.Text = dtOld.ToShortTimeString();

        }
        #endregion

        #region "抓图 保存 capture "
        /*
         * 功能：
         *
         */

        [System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]
        private static extern bool BitBlt(
        IntPtr hdcDest,   //目标设备的句柄    
        int nXDest,   //   目标对象的左上角的X坐标    
        int nYDest,   //   目标对象的左上角的X坐标    
        int nWidth,   //   目标对象的矩形的宽度    
        int nHeight,   //   目标对象的矩形的长度    
        IntPtr hdcSrc,   //   源设备的句柄    
        int nXSrc,   //   源对象的左上角的X坐标    
        int nYSrc,   //   源对象的左上角的X坐标    
        System.Int32 dwRop   //   光栅的操作值    
        );
        [System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]
        private static extern IntPtr CreateDC(
        string lpszDriver,   //   驱动名称    
        string lpszDevice,   //   设备名称    
        string lpszOutput,   //   无用，可以设定位"NULL"    
        IntPtr lpInitData   //   任意的打印机数据    
        );
        [System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]
        private static extern bool DeleteDC(
        IntPtr hdc
        );

        //抓图 保存
        public void capture()
        {
            try
            {
                IntPtr dc1 = CreateDC("DISPLAY", null, null, (IntPtr)null);
                //创建显示器的DC    
                Graphics g1 = Graphics.FromHdc(dc1);
                //由一个指定设备的句柄创建一个新的Graphics对象    
                MyImage = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, g1);
                //根据屏幕大小创建一个与之相同大小的Bitmap对象    
                Graphics g2 = Graphics.FromImage(MyImage);
                //获得屏幕的句柄    
                IntPtr dc3 = g1.GetHdc();
                //获得位图的句柄    
                IntPtr dc2 = g2.GetHdc();
                //把当前屏幕捕获到位图对象中    
                BitBlt(dc2, 0, 0, Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, dc3, 0, 0, 13369376);
                //把当前屏幕拷贝到位图中    
                g1.ReleaseHdc(dc3);
                //释放屏幕句柄    
                g2.ReleaseHdc(dc2);
                //释放位图句柄    
                string strDt = DateTime.Now.ToString().Replace("/", "-");
                strDt = strDt.Replace(":", "_");
                MyImage.Save(textBox1.Text.Trim() + subDirection + "//" + strDt + ".jpg", ImageFormat.Jpeg);
                //MessageBox.Show("已经把当前屏幕保存到C://MyJpeg.jpg文件中！");
                MyImage.Dispose();
                g1.Dispose();
                g2.Dispose();
                if (!DeleteDC(dc1))
                {
                    MessageBox.Show("DeleteDC() not successed");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }

        }

        #endregion

        #region "最小化 显示托盘 Form1_SizeChanged"
        /*
         *
         *
         */
        private void Form1_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)
            {
                this.Hide();
                this.notifyIcon1.Visible = false;
            }
        }
        #endregion

        #region "点击托盘图标 notifyIcon1_Click"
        /*
         *
         *
         */
        private void notifyIcon1_Click(object sender, EventArgs e)
        {
            this.Visible = true;
            this.WindowState = FormWindowState.Normal;
            this.notifyIcon1.Visible = false;
        }

        #endregion

        #region "定时器 timer1_Tick"
        /*
         *
         *
         */
        private void timer1_Tick(object sender, EventArgs e)
        {
            //定时器
            dtTemp = dtOld.AddMinutes(Convert.ToDouble(comboBox1.Text.Trim()));
            if ((DateTime .Now.Hour == dtTemp.Hour) && (DateTime.Now.Minute == dtTemp.Minute))
            {
                //MessageBox.Show("ok");
                setSubDirectory();
                //save the jpg
                capture();
                //刷新时间
                dtOld = DateTime.Now;
                //display the old time
                lblLastTime.Text = dtOld.ToShortTimeString();

            }

        }

        #endregion

        #region "保存路径修改 btnFolderSelect_Click"
        /*
         *
         *
         */
        private void btnFolderSelect_Click(object sender, EventArgs e)
        {
            //保存路径修改
            if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
            {
                textBox1.Text = folderBrowserDialog1.SelectedPath;
            }

        }

        #endregion

        #region "下层子路径设置 setSubDirectory"
        /*
         *
         *
         */
        private void setSubDirectory()
        {
            subDirection = "//" + DateTime.Now.ToString().Replace("/", "-").Substring(0, 10);
            if (!Directory.Exists(textBox1.Text.Trim() + subDirection))
            {
                Directory.CreateDirectory(textBox1.Text.Trim() + subDirection);
            }

        }

        #endregion

    }
}