public static async Task <string> ReadFile(string filename, string folderPath = "DataCache", bool isInstallationFolder = false)
{
StorageFolder localFolder;
if (isInstallationFolder)
{
localFolder = Windows.ApplicationModel.Package.Current.InstalledLocation;
}
else
{
localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
}
var folder = await localFolder.GetFolderAsync(folderPath);
//var folder = await installFolder.GetFolderAsync("Assets/Constellation");
var file = await folder.GetFileAsync(filename);
var fs = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
var inStream = fs.GetInputStreamAt(0);
Windows.Storage.Streams.DataReader reader = new Windows.Storage.Streams.DataReader(inStream);
await reader.LoadAsync((uint)fs.Size);
string data = reader.ReadString((uint)fs.Size);
reader.DetachStream();
return(data);
}
public static async Task <string> ReadFile(string filename)
{
var localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
var folder = localFolder;
var file = await folder.GetFileAsync(filename);
var fs = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
var inStream = fs.GetInputStreamAt(0);
Windows.Storage.Streams.DataReader reader = new Windows.Storage.Streams.DataReader(inStream);
await reader.LoadAsync((uint)fs.Size);
string data = reader.ReadString((uint)fs.Size);
reader.DetachStream();
return(data);
}
private async Task <Stream> ReadFile(string filename)
{
var file = await Folder.GetFileAsync(filename);
if (!file.IsAvailable)
{
this.UpdateCache().ConfigureAwait(false);
return(null);
}
var fs = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
var inStream = fs.GetInputStreamAt(0);
var reader = new Windows.Storage.Streams.DataReader(inStream);
await reader.LoadAsync((uint)fs.Size);
var data = reader.ReadBuffer((uint)fs.Size);
reader.DetachStream();
return(data.AsStream());
}
/// <summary>
/// Creates and adds a time track objects into the Items collection.
/// </summary>
public async void LoadData() {
var fileList = await ApplicationData.Current.LocalFolder.GetFilesAsync();
var file = fileList.FirstOrDefault(f => f.Name == localFileName);
if (file != null) {
using (var stream = await file.OpenReadAsync()) {
using (var dr = new Windows.Storage.Streams.DataReader(stream)) {
try {
await dr.LoadAsync(unchecked((uint)stream.Size));
var numberOfItems = dr.ReadInt32();
ObservableCollection<TrackItem> loadingItems = new ObservableCollection<TrackItem>();
for (int x = 0; x < numberOfItems; x++) {
TrackItem item = new TrackItem();
item.Start = dr.ReadDateTime();
item.End = dr.ReadDateTime();
int topicLength = dr.ReadInt32();
item.Topic = dr.ReadString((uint)topicLength);
loadingItems.Add(item);
}
bool currentItemExists = dr.ReadBoolean();
TrackItem loadingCurrentItem = null;
if (currentItemExists) {
loadingCurrentItem = new TrackItem();
loadingCurrentItem.Start = dr.ReadDateTime();
int topicLength = dr.ReadInt32();
loadingCurrentItem.Topic = dr.ReadString((uint)topicLength);
}
dr.DetachStream();
Items = loadingItems;
OnPropertyChanged(nameof(Items));
CurrentItem = loadingCurrentItem;
IsDataLoaded = true;
} catch {
try {
await file.DeleteAsync();
} catch { }
CurrentItem = null;
IsDataLoaded = true;
}
}
}
} else {
// Sample data; replace with real data
Items.Add(new TrackItem() {
Topic = "First Tracked Item",
Start = new DateTimeOffset(new DateTime(2015, 11, 5, 9, 0, 0), new TimeSpan(-6, 0, 0)),
End = new DateTimeOffset(new DateTime(2015, 11, 5, 11, 30, 0), new TimeSpan(-6, 0, 0)),
});
Items.Add(new TrackItem() {
Topic = "Second Tracked Item",
Start = new DateTimeOffset(new DateTime(2015, 11, 5, 12, 30, 0), new TimeSpan(-6, 0, 0)),
End = new DateTimeOffset(new DateTime(2015, 11, 5, 17, 0, 0), new TimeSpan(-6, 0, 0)),
});
CurrentItem = null;
this.IsDataLoaded = true;
}
}