// 选择一个本地文件
private async void btnPickLocalFile_Click(object sender, RoutedEventArgs e)
{
StorageFile file = await Package.Current.InstalledLocation.GetFileAsync(@"Assets\hololens.jpg");
if (_fileOpenPickerUI.CanAddFile(file))
{
AddFileResult result = _fileOpenPickerUI.AddFile("myFile", file);
lblMsg.Text = "选择的文件: " + file.Name;
lblMsg.Text += Environment.NewLine;
lblMsg.Text += "AddFileResult: " + result.ToString();
}
}
private async void AddFileButton_Click(object sender, RoutedEventArgs e)
{
StorageFile file = await Windows.Storage.ApplicationData.Current.LocalFolder.CreateFileAsync(@"CachedFile.txt", CreationCollisionOption.ReplaceExisting);
await Windows.Storage.FileIO.WriteTextAsync(file, @"Cached file created...");
CachedFileUpdater.SetUpdateInformation(file, "CachedFile", ReadActivationMode.BeforeAccess, WriteActivationMode.NotNeeded, CachedFileOptions.RequireUpdateOnAccess);
bool inBasket;
switch (fileOpenPickerUI.AddFile(id, file))
{
case AddFileResult.Added:
case AddFileResult.AlreadyAdded:
inBasket = true;
OutputTextBlock.Text = Status.FileAdded;
break;
default:
inBasket = false;
OutputTextBlock.Text = Status.FileAddFailed;
break;
}
UpdateButtonState(inBasket);
}
private void OnSelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems != null)
{
var addedStickers = e.AddedItems.OfType <Sticker>();
foreach (var item in addedStickers)
{
if (_pickerUi.CanAddFile(item.File))
{
_pickerUi.AddFile(item.File.Path, item.File);
}
}
}
if (e.RemovedItems != null)
{
var removedItems = e.RemovedItems.OfType <Sticker>();
foreach (var item in removedItems)
{
if (_pickerUi.ContainsFile(item.File.Path))
{
_pickerUi.RemoveFile(item.File.Path);
}
}
}
}
public async Task Add(PickedFile file)
{
IStorageFile f = null;
if (file.Source == PickedFileSource.Local)
{
f = await StorageFile.GetFileFromPathAsync(file.Path);
}
else if (file.Source == PickedFileSource.Uri)
{
var uri = new Uri(file.Path);
f = await StorageFile.CreateStreamedFileFromUriAsync(Path.GetFileName(file.Path), uri, RandomAccessStreamReference.CreateFromUri(uri));
}
else
{
throw new ArgumentException("Unknown File source.", nameof(f));
}
lock (syncObject)
{
if (fileOpenPickerUI.CanAddFile(f))
{
fileOpenPickerUI.AddFile(file.Path, f);
}
}
}
// 本 CachedFile 用于从 Local 更新（由 CachedFileUpdater 更新 CachedFile）
private async void btnPickCachedFileLocal_Click(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
StorageFile file = await ApplicationData.Current.LocalFolder.CreateFileAsync(@"webabcdCachedFileUpdaterLocal.txt", CreationCollisionOption.ReplaceExisting);
string textContent = "I am webabcd";
await FileIO.WriteTextAsync(file, textContent);
/*
* 设置 CachedFile，即将文件关联到 CachedFileUpdater
* SetUpdateInformation(IStorageFile file, string contentId, ReadActivationMode readMode, WriteActivationMode writeMode, CachedFileOptions options);
* file - 与 CachedFileUpdater 关联的文件
* contentId - 与 CachedFileUpdater 关联的文件标识
*/
CachedFileUpdater.SetUpdateInformation(file, "cachedFileLocal", ReadActivationMode.BeforeAccess, WriteActivationMode.NotNeeded, CachedFileOptions.RequireUpdateOnAccess);
lblMsg.Text = "选择的文件: " + file.Name;
AddFileResult result = _fileOpenPickerUI.AddFile("myFile", file);
}
public async Task ShowRecordings()
{
var recordings = await RecordingStorage.GetRecordings();
RecordingList.ItemsSource = recordings
.Select(t =>
new RecordingViewModel(t.Item1, () =>
{
if (!_pickerUi.ContainsFile(t.Item1))
{
_pickerUi.AddFile(t.Item1, t.Item2);
}
else
{
_pickerUi.RemoveFile(t.Item1);
}
}))
.ToArray();
}
/// <summary>
/// Invoked when the selected collection of files changes.
/// </summary>
/// <param name="sender">The GridView instance used to display the available files.</param>
/// <param name="e">Event data that describes how the selection changed.</param>
private void HandleSelectedFileChanged(Object sender,
SelectionChangedEventArgs e)
{
// Update the picker 'basket' with the newly selected items
foreach (var addedFile in e.AddedItems.Cast <FileInfo>())
{
if (_fileOpenPickerUI.CanAddFile(addedFile.File))
{
_fileOpenPickerUI.AddFile(addedFile.Title, addedFile.File);
}
}
// Update the picker 'basket' to remove any newly removed items
foreach (var removedFile in e.RemovedItems.Cast <FileInfo>())
{
if (_fileOpenPickerUI.ContainsFile(removedFile.Title))
{
_fileOpenPickerUI.RemoveFile(removedFile.Title);
}
}
}
private async void AddLocalFileButton_Click(object sender, RoutedEventArgs e)
{
StorageFile file = await Package.Current.InstalledLocation.GetFileAsync(@"Assets\squareTile-sdk.png");
bool inBasket;
switch (fileOpenPickerUI.AddFile(id, file))
{
case AddFileResult.Added:
case AddFileResult.AlreadyAdded:
inBasket = true;
OutputTextBlock.Text = Status.FileAdded;
break;
default:
inBasket = false;
OutputTextBlock.Text = Status.FileAddFailed;
break;
}
UpdateButtonState(inBasket);
}
private async void AddLocalFileButton_Click(object sender, RoutedEventArgs e)
{
StorageFile file = await Package.Current.InstalledLocation.GetFileAsync(@"Assets\squareTile-sdk.png");
bool inBasket;
switch (fileOpenPickerUI.AddFile(id, file))
{
case AddFileResult.Added:
case AddFileResult.AlreadyAdded:
inBasket = true;
await new Windows.UI.Popups.MessageDialog("File added to the basket.").ShowAsync();
break;
default:
inBasket = false;
await new Windows.UI.Popups.MessageDialog("Couldn't add file to the basket.").ShowAsync();
break;
}
UpdateButtonState(inBasket);
}
private async void AddUriFileButton_Click(object sender, RoutedEventArgs e)
{
const string filename = @"URI.png"; // This will be used as the filename of the StorageFile object that references the specified URI
FileOpenPickerPage.Current.NotifyUser("", NotifyType.StatusMessage);
Uri uri = null;
try
{
uri = new Uri(URLInput.Text);
}
catch (FormatException)
{
FileOpenPickerPage.Current.NotifyUser("Please enter a valid URL.", NotifyType.ErrorMessage);
}
if (uri != null)
{
StorageFile file = await StorageFile.CreateStreamedFileFromUriAsync(filename, uri, RandomAccessStreamReference.CreateFromUri(uri));
bool inBasket;
switch (fileOpenPickerUI.AddFile(id, file))
{
case AddFileResult.Added:
case AddFileResult.AlreadyAdded:
inBasket = true;
OutputTextBlock.Text = Status.FileAdded;
break;
default:
inBasket = false;
OutputTextBlock.Text = Status.FileAddFailed;
break;
}
UpdateButtonState(inBasket);
}
}
async private void ResumeListSelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (!_saving)
{
var grid_view = sender as ListView;
var resume = grid_view.SelectedItem as Resume;
var resume_file = resume?.GetFile();
if (resume_file != null)
{
if (_previous_id != null)
{
_open_basket.RemoveFile(_previous_id);
}
_open_basket.AddFile(resume.ResumeID, resume_file);
_open_basket.Title = $"{resume.Name} selected";
_previous_id = resume.ResumeID;
}
else
{
await new MessageDialog("Resume is null").ShowAsync();
}
}
}
public AddFileResult AddFile(string id, IStorageFile file)
{
return(_fileOpenPicker.AddFile(id, file));
}