Winform屏幕截图保存C#代码

代码如下：

 1 using System.Runtime.InteropServices;

 2 using System.Drawing.Imaging;

 3 

 4  

 5 

 6     [System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]

 7     private static extern bool BitBlt(

 8 

 9                     IntPtr hdcDest,   //   目标   DC的句柄   

10                     int nXDest,

11                     int nYDest,

12                     int nWidth,

13                     int nHeight,

14                     IntPtr hdcSrc,     //   源DC的句柄   

15                     int nXSrc,

16                     int nYSrc,

17                     System.Int32 dwRop     //   光栅的处理数值   

18                       ); 

19 

20  

21 

22   private   void   button1_Click(object   sender,   System.EventArgs   e)   

23   {   

24   //获得当前屏幕的大小   http://www.cnblogs.com/roucheng/

25   Rectangle   rect   =   new   Rectangle   (   )   ;   

26   rect   =   Screen.GetWorkingArea   (   this   )   ;   

27   //创建一个以当前屏幕为模板的图象   

28   Graphics   g1   =   this.CreateGraphics   (   )   ;   

29   //创建以屏幕大小为标准的位图     

30   Image   MyImage   =   new   Bitmap   (   rect.Width   ,   rect.Height   ,   g1   )   ;   

31   Graphics   g2   =   Graphics.FromImage   (   MyImage   )   ;   

32   //得到屏幕的DC   

33   IntPtr   dc1   =   g1.GetHdc   (   )   ;   

34   //得到Bitmap的DC     

35   IntPtr   dc2   =   g2.GetHdc   (   )   ;   

36   //调用此API函数，实现屏幕捕获   

37   BitBlt   (   dc2   ,   0   ,   0   ,   rect.Width   ,   rect.Height   ,   dc1   ,   0   ,   0   ,   13369376   )   ;   

38   //释放掉屏幕的DC   

39   g1.ReleaseHdc   (   dc1   )   ;   

40   //释放掉Bitmap的DC     

41   g2.ReleaseHdc   (   dc2   )   ;   

42   //以JPG文件格式来保存   

43   MyImage.Save   (   @"c:/Capture.jpg"   ,   ImageFormat.Jpeg   );   

44   MessageBox.Show   (   "当前屏幕已经保存为C盘的capture.jpg文件！"   )   ;   

45   }