public async Task DisplayAsync(StorageFile file)
{
FileGrid.Columns.Clear();
Table table = await ParquetUwp.LoadAsync(file);
int i = 0;
foreach (Field f in table.Schema.Fields)
{
FileGrid.Columns.Add(new DataGridTextColumn
{
Header = f.Name,
Width = DataGridLength.SizeToCells,
Binding = new Binding
{
Path = new PropertyPath("[" + i++ + "]")
}
});
}
FileGrid.ItemsSource = table.Select(r => new TableRowView(r)).ToList();
StatusText.Text = $"showing first {table.Count} records.";
}
private async void OpenFileButton_Click(object sender, RoutedEventArgs e)
{
StorageFile file = await ParquetUwp.GetFromFilePickerAsync();
if (file != null && FileDragged != null)
{
await FileDragged(file);
}
}
private async void Grid_Drop(object sender, DragEventArgs e)
{
StorageFile file = await ParquetUwp.GetFirstParquetFileAsync(e);
if (file != null && FileDragged != null)
{
await FileDragged(file);
}
}
private async Task LoadAndDisplay(StorageFile file)
{
HamburgerMenu.IsPaneOpen = false;
if (file == null)
{
return;
}
LoadingControl.IsLoading = true;
try
{
DataSet ds = await ParquetUwp.LoadAsync(file);
Display(ds);
}
finally
{
LoadingControl.IsLoading = false;
}
}
private async void HamburgerMenu_ItemClick(object sender, ItemClickEventArgs e)
{
MenuItem mi = e.ClickedItem as MenuItem;
if (mi == null)
{
return;
}
if (mi.Action == "open")
{
await LoadAndDisplay(await ParquetUwp.GetFromFilePickerAsync());
}
else if (mi.Action == "issue")
{
await Windows.System.Launcher.LaunchUriAsync(new Uri("https://github.com/aloneguid/parquet-viewer-uwp/issues/new"));
}
else if (mi.Action == "about")
{
await Windows.System.Launcher.LaunchUriAsync(new Uri("https://github.com/aloneguid/parquet-viewer-uwp"));
}
HamburgerMenu.SelectedItem = null;
}
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
await LoadAndDisplay(ParquetUwp.GetFromFileAssociationAsync(e));
}
