static List<string> readNote()
        {
            var onenoteApp = new Application();

            string notebookXml;
            onenoteApp.GetHierarchy(null, HierarchyScope.hsPages, out notebookXml);

            var doc = XDocument.Parse(notebookXml);
            var ns = doc.Root.Name.Namespace;
            var notebookNode = doc.Descendants(ns + "Page").Where(n => n.Attribute("name").Value == Globals.oneNoteName).FirstOrDefault();

            string pageXml;
            onenoteApp.GetPageContent(notebookNode.Attribute("ID").Value, out pageXml);

            var parsedXML = XDocument.Parse(pageXml);
            List<string> slideTextList = new List<string>();
            string textData;
            for (int i = 0; i < Globals.imageCount; i++)
            {
                ///XElement OCRTXML = parsedXML.Descendants(ns + "OCRText").FirstOrDefault();
                XElement OCRTXML = parsedXML.Descendants(ns + "Image").ElementAt(i).Descendants(ns + "OCRData").FirstOrDefault();
                if (OCRTXML != null) {
                    textData = OCRTXML.Value;
                }
                else {
                    textData = "No text detected";
                }
                slideTextList.Add(Globals.imageNames.ElementAt(i) +": "+ textData);
            }
            return slideTextList;
        }
        static void cleanAllUp(string a)
        {
            var onenoteApp = new Application();

            string notebookXml;
            onenoteApp.GetHierarchy(null, HierarchyScope.hsPages, out notebookXml);

            var doc = XDocument.Parse(notebookXml);
            var ns = doc.Root.Name.Namespace;
            var pageNode = doc.Descendants(ns + "Page").Where(n => n.Attribute("name").Value == "OCRImages").FirstOrDefault();
            var existingPageId = pageNode.Attribute("ID").Value;
            pageNode.RemoveAll();
        }
        static void writeNote()
        {
            string strNamespace = "http://schemas.microsoft.com/office/onenote/2010/onenote";
            string m_xmlImageContent = "<one:Image><one:Size width=\"{1}\" height=\"{2}\" isSetByUser=\"true\" /><one:Data>{0}</one:Data></one:Image>";
            string m_xmlNewOutline = "<?xml version=\"1.0\"?><one:Page xmlns:one=\"{2}\" ID=\"{1}\"><one:Title><one:OE><one:T><![CDATA[{3}]]></one:T></one:OE></one:Title>{0}</one:Page>";
            string pageName = Globals.oneNoteName;

            var onenoteApp = new Application();

            string notebookXml;
            onenoteApp.GetHierarchy(null, HierarchyScope.hsPages, out notebookXml);

            var doc = XDocument.Parse(notebookXml);
            var ns = doc.Root.Name.Namespace;
            var pageNode = doc.Descendants(ns + "Page").Where(n => n.Attribute("name").Value == Globals.oneNoteName).FirstOrDefault();
            var existingPageId = pageNode.Attribute("ID").Value;
            if (pageNode != null)
            {
                string[] fileEntries = Directory.GetFiles(Globals.imgDirPath);
                foreach (string fileName in fileEntries)
                {
                    Bitmap bitmap = new Bitmap(fileName);
                    MemoryStream stream = new MemoryStream();
                    bitmap.Save(stream, ImageFormat.Jpeg);
                    string fileString = Convert.ToBase64String(stream.ToArray());

                    string imageXmlStr = string.Format(m_xmlImageContent, fileString, bitmap.Width / 10, bitmap.Height / 10);
                    string pageChangesXml = string.Format(m_xmlNewOutline, new object[] { imageXmlStr, existingPageId, strNamespace, pageName });
                    onenoteApp.UpdatePageContent(pageChangesXml.ToString(), DateTime.MinValue);
                    Globals.imageNames.Add(fileName);
                    Globals.imageCount++;
                }
            }
            else {
                Console.WriteLine(pageName + " Notebook not found.");
                Environment.Exit(-1);

            }
        }