MPP Viewer

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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;
using ProjectLibrary;
using System.IO;
using ProjectLibrary.Mpp;
using Microsoft.Win32;
using Ricciolo.Controls;
using System.Data;

namespace ProjectViewer
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        OpenFileDialog openFileDialog = new OpenFileDialog();
        MppProject project;

        public MainWindow()
        {
            InitializeComponent();
            openFileDialog.Filter = "Microsoft Project Files| *.mpp";
        }

        private void menuOpen_Click(object sender, RoutedEventArgs e)
        {
            if(openFileDialog.ShowDialog(this).GetValueOrDefault())
            {
                string fileName = openFileDialog.FileName;

                if (!String.IsNullOrEmpty(fileName))
                {
                    if (File.Exists(fileName))
                    {
                        try
                        {
                            MppHelper mppHelper = new MppHelper();
                            project = mppHelper.LoadProjectFile(fileName);

                            allTasksView.DataContext = project;
                            resourceSheetView.DataContext = project;

                            miExportToExcel.IsEnabled = true;
                        }
                        catch (Exception exception)
                        {
                            miExportToExcel.IsEnabled = false;

                            MessageBox.Show(exception.Message, "Load Error", MessageBoxButton.OK, MessageBoxImage.Error);
                        }
                    }
                    else
                    {
                        MessageBox.Show("File does not exist. Please enter a valid path.", "Input", MessageBoxButton.OK, MessageBoxImage.Exclamation);
                    }
                }

            }

        }


        private void miExportToExcel_Click(object sender, RoutedEventArgs e)
        {
            SaveFileDialog saveFileDialog = new SaveFileDialog();
            if (saveFileDialog.ShowDialog().GetValueOrDefault())
            {
                DataSet dataSet = Utility.GetDataSet(project);

                ExcelDocumentHelper helper = new ExcelDocumentHelper();
                helper.ExportToExcel(saveFileDialog.FileName, dataSet);
            }
        }

    }
}