using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace ProgressBarSample
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private BackgroundWorker _worker;

        public MainWindow()
        {
            InitializeComponent();
            InitInstance();
        }

        private void InitInstance()
        {
            _worker = new BackgroundWorker();
            _worker.WorkerReportsProgress = true;
            _worker.DoWork -= OnWorker_DoWork;
            _worker.ProgressChanged -= OnWorker_ProgressChanged;
            _worker.RunWorkerCompleted -= OnWorker_RunWorkerCompleted;
            _worker.DoWork += OnWorker_DoWork;
            _worker.ProgressChanged += OnWorker_ProgressChanged;
            _worker.RunWorkerCompleted += OnWorker_RunWorkerCompleted;
        }

        private void btnStart_Click(object sender, RoutedEventArgs e)
        {
            if (_worker.IsBusy)
                return;

            _worker.RunWorkerAsync();
        }

        private void OnWorker_RunWorkerCompleted(object? sender, RunWorkerCompletedEventArgs e)
        {
            pgbMain.Value = pgbMain.Maximum;
        }

        private void OnWorker_ProgressChanged(object? sender, ProgressChangedEventArgs e)
        {
            pgbMain.Value = (double)e.ProgressPercentage / 10.0;
        }

        private void OnWorker_DoWork(object? sender, DoWorkEventArgs e)
        {
            for (int i = 0; i < 1000; i++)
            {
                _worker.ReportProgress(i);
                Thread.Sleep(10);
            }
        }
    }
}