async void OnOpenAppBarButtonClick(object sender, RoutedEventArgs args)
{
FileOpenPicker picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".txt");
picker.FileTypeFilter.Add(".rtf");
StorageFile storageFile = await picker.PickSingleFileAsync();
// If user presses Cancel, result is null
if (storageFile == null)
{
return;
}
TextSetOptions textOptions = TextSetOptions.None;
if (storageFile.ContentType != "text/plain")
{
textOptions = TextSetOptions.FormatRtf;
}
string message = null;
try
{
IRandomAccessStream stream = await storageFile.OpenAsync(FileAccessMode.Read);
richEditBox.Document.LoadFromStream(textOptions, stream);
}
catch (Exception exc)
{
message = exc.Message;
}
if (message != null)
{
MessageDialog msgdlg = new MessageDialog("The file could not be opened. " +
"Windows reports the following error: " +
message, "RichTextEditor");
await msgdlg.ShowAsync();
}
}
public void SetText(TextSetOptions options, string value)
{
throw new NotImplementedException();
}
public void LoadFromStream(TextSetOptions options, Windows.Storage.Streams.IRandomAccessStream value)
{
throw new NotImplementedException();
}
