Scenario2.xaml.cs

//*********************************************************
//
// Copyright (c) Microsoft. All rights reserved.
// THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
// IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
// PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
//
//*********************************************************

using SDKTemplate;

using System;
using System.Text;
using System.Collections.Generic;
using Windows.Storage;
using Windows.Storage.Pickers;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Navigation;

namespace FilePicker
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class Scenario2 : SDKTemplate.Common.LayoutAwarePage
    {
        MainPage rootPage = MainPage.Current;

        public Scenario2()
        {
            this.InitializeComponent();
            PickFilesButton.Click += new RoutedEventHandler(PickFilesButton_Click);
        }

        private async void PickFilesButton_Click(object sender, RoutedEventArgs e)
        {
            // Clear any previously returned files between iterations of this scenario
            rootPage.ResetScenarioOutput(OutputTextBlock);

            //<Snippetall_openpicker_checksnapped_showmulti>
            if (rootPage.EnsureUnsnapped())
            {
                //<Snippetall_openpicker_displayAllTypes>
                //<Snippetcs_openpicker_displayAllTypes>
                FileOpenPicker openPicker = new FileOpenPicker();
                openPicker.ViewMode = PickerViewMode.List;
                openPicker.SuggestedStartLocation = PickerLocationId.DocumentsLibrary;
                openPicker.FileTypeFilter.Add("*");
                //</Snippetcs_openpicker_displayAllTypes>
                //</Snippetall_openpicker_displayAllTypes>

                //<Snippetall_openpicker_showmulti>
                //<Snippetcs_openpicker_showmulti>
                IReadOnlyList<StorageFile> files = await openPicker.PickMultipleFilesAsync();
                if (files.Count > 0)
                {
                    StringBuilder output = new StringBuilder("Picked files:\n");
                    // Application now has read/write access to the picked file(s)
                    foreach (StorageFile file in files)
                    {
                        output.Append(file.Name + "\n");
                    }
                    OutputTextBlock.Text = output.ToString();
                }
                else
                {
                    OutputTextBlock.Text = "Operation cancelled.";
                }
                //</Snippetcs_openpicker_showmulti>
                //</Snippetall_openpicker_showmulti>
            }
            //<Snippetall_openpicker_checksnapped_showmulti>
        }
    }
}