/// 
        /// 连接摄像头        /// 
        ///         ///         private void button3_Click(object sender, EventArgs e)        {            CameraConn();        } /// 
        /// 拍照        /// 
        ///         ///         private void button6_Click_1(object sender, EventArgs e)        {            string RYID = txt_RYID.Text.ToString();            if (RYID == null || RYID == "")            {                MessageBox.Show("请选择人员");                return;            }            if (MessageBox.Show("确定是该人员：" + txt_XM.Text.ToString(), "提示", MessageBoxButtons.YesNo) == DialogResult.No)            {                return;            }            if (videoSourcePlayer.IsRunning)                {                  string path = System.Environment.CurrentDirectory+"\\摄像头照片\\";                  BitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(                  videoSourcePlayer.GetCurrentVideoFrame().GetHbitmap(),                  IntPtr.Zero,                  Int32Rect.Empty,                  BitmapSizeOptions.FromEmptyOptions());                  PngBitmapEncoder pE = new PngBitmapEncoder();                  pE.Frames.Add(BitmapFrame.Create(bitmapSource));                  picName = path + txt_XM.Text.ToString() +txt_RYID.Text.ToString()+ ".jpg";                  picName2 = path + txt_XM.Text.ToString() + txt_RYID.Text.ToString() +"2.jpg";                  if (!Directory.Exists(path))　　              {                      Directory.CreateDirectory(path);　　               }                  if (File.Exists(picName))                  {                      File.Delete(picName);                  }                  if (File.Exists(picName2))                  {                      File.Delete(picName2);                  }                  using (Stream stream = File.Create(picName))                  {                      pE.Save(stream);                  }                  ///将图片左右反转                  if (File.Exists(picName))                  {                      Bitmap bmp = new Bitmap(picName);                      bmp= RevPic(bmp, 1280, 720);                      bmp.Save(picName2, System.Drawing.Imaging.ImageFormat.Jpeg);                  }                                      MessageBox.Show("拍照成功");                                 }        }//关闭摄像头private void button8_Click(object sender, EventArgs e)        {            videoSourcePlayer.SignalToStop();            videoSourcePlayer.WaitForStop();        }