kmpdfkit_demo/Demo/Examples/PDFViewer/App.xaml.cs

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Threading.Tasks;
using System.Windows;
using System.Xml;
using ComPDFKit.NativeMethod;
using Compdfkit_Tools.Helper;

namespace PDFViewer
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App: Application
    {
        static public bool DefaultPDFLoaded = false;
        public static FilePathList OpenedFilePathList = new FilePathList();

        protected override void OnStartup(StartupEventArgs e)
        {
            string str = GetType().Assembly.Location;
            base.OnStartup(e);
            LicenseVerify();
            FileHistoryHelper<PDFFileInfo>.Instance.LoadHistory();
        }
        
        private static bool LicenseVerify()
        {
            if (!CPDFSDKVerifier.LoadNativeLibrary())
                return false;

            LicenseErrorCode verifyResult = CPDFSDKVerifier.LicenseVerify("license_key_windows.txt", true);
            return (verifyResult != LicenseErrorCode.E_LICENSE_SUCCESS);
        }
    }

    public class FilePathList : List<string>
    {
        public new void Add(string item)
        {
            base.Add(item);
            HistoryFile(item);
        }

        private void HistoryFile(string item)
        {
            PDFFileInfo fileInfo = new PDFFileInfo();
            fileInfo.FilePath = item;
            fileInfo.FileName = Path.GetFileName(item);
            fileInfo.FileSize = CommonHelper.GetFileSize(fileInfo.FilePath);
            fileInfo.OpenDate = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
            FileHistoryHelper<PDFFileInfo>.Instance.AddHistory(fileInfo);
            FileHistoryHelper<PDFFileInfo>.Instance.SaveHistory();
        }
    }


}