private void pictureBox_home_Click(object sender, EventArgs e) { //批注截屏上传 Bitmap bmp = ScreenCapture.captureScreen(0, 0); string base64 = Util.ImgToBase64String(bmp); int imgHeight = bmp.Height; int imgWidth = bmp.Width; string imgName = Global.getSchoolID() + "-" + Global.getClassID() + "-" + DateTime.Now.ToString("yyyyMMdd") + DateTime.Now.ToString("HHmmss") + ".jpg"; string imgDir = Application.StartupPath + "\\" + DateTime.Now.ToString("yyyyMMdd"); if (!Directory.Exists(imgDir)) { Directory.CreateDirectory(imgDir); } string imgPath = imgDir + "\\" + imgName; bmp.Save(imgPath); Common.uploadPicture(imgPath); Common.doPost("addDrawViewEvent", "filename=" + imgName); this.ShowMainPage(); }