C# 儲存表單為圖片（儲存縱斷面圖）

標籤：   縱斷面   c#   

源碼如下：

     #region 儲存縱斷面        private void button_save_Click(object sender , EventArgs e)        {            SaveFileDialog saveImageDialog = new SaveFileDialog();            saveImageDialog.Title = "儲存縱斷面圖";            saveImageDialog.DefaultExt = ".png";            saveImageDialog.FileName = Linefeaturelayer.Name + "縱斷面圖";            saveImageDialog.InitialDirectory = "C:\\";            DialogResult dr = saveImageDialog.ShowDialog();            if (dr==DialogResult.OK)            {                CaptureImage(saveImageDialog.FileName);                MessageBox.Show("儲存成功！");            }        }        private void CaptureImage(string path)        {            try            {                //獲得當前螢幕的大小                Rectangle rect = new Rectangle();                rect = Screen.GetWorkingArea(this);                //建立一個以當前螢幕為模板的圖象                Graphics g1 = this.CreateGraphics();                //建立以螢幕大小為標準的位元影像                 Image MyImage = new Bitmap(rect.Width , rect.Height , g1);                Graphics g2 = Graphics.FromImage(MyImage);                //得到螢幕的DC                IntPtr dc1 = g1.GetHdc();                //得到Bitmap的DC                 IntPtr dc2 = g2.GetHdc();                //調用此API函數，實現螢幕捕獲                BitBlt(dc2 , 0 , 0 , rect.Width , rect.Height , dc1 , 0 , 0 , 13369376);                //釋放掉螢幕的DC                g1.ReleaseHdc(dc1);                //釋放掉Bitmap的DC                 g2.ReleaseHdc(dc2);                //以JPG檔案格式來儲存                MyImage.Save(path , ImageFormat.Png);            }            catch (System.Exception ex)            {                MessageBox.Show(ex.Message + " 儲存圖片失敗！");             }        }        //聲明一個API函數        [System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]             private static extern bool BitBlt(                        IntPtr hdcDest , // 目標 DC的控制代碼            int nXDest ,            int nYDest ,            int nWidth ,            int nHeight ,            IntPtr hdcSrc ,  // 源DC的控制代碼            int nXSrc ,            int nYSrc ,            System.Int32 dwRop  // 光柵的處理數值                        );        #endregion

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