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 Screen {  public partial class Form1 : Form  {   public Form1()   {    //主窗體桌面不顯示 僅在進程中顯示    InitializeComponent();    this.WindowState = FormWindowState.Minimized;    this.ShowInTaskbar = false;    SetVisibleCore(false);   }   protected override void SetVisibleCore(bool value)   {    base.SetVisibleCore(value);   }   private void timer1_Tick(object sender, EventArgs e)   {    //獲得當前屏幕的大小    Rectangle rect = new Rectangle();    rect = System.Windows.Forms.Screen.GetWorkingArea(this);    Size mySize = new Size(rect.Width, rect.Height);    Bitmap bitmap = new Bitmap(rect.Width, rect.Height);    Graphics g = Graphics.FromImage(bitmap);    g.CopyFromScreen(0, 0, 0, 0, mySize);    string ImageName = DateTime.Now.ToString("yyyyMMdd_hhmmss") + ".jpg";    bitmap.Save("F://screen//" + ImageName);    //釋放資源    bitmap.Dispose();    g.Dispose();    GC.Collect();   }   private void Form1_Load(object sender, EventArgs e)   {    timer1.Enabled = true;//激活timer控件   }  } }