public static async void Save(Notes notes)
{
ObservableCollection <Notes> temp = new ObservableCollection <Notes>();
StorageFolder folder = ApplicationData.Current.LocalFolder;
bool exists = await AppSystem.FileExists("Data");
if (exists == true)
{
StorageFile file = await folder.GetFileAsync("Data");
using (Stream stream = await file.OpenStreamForReadAsync())
{
DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(Notes));
temp = (ObservableCollection <Notes>)json.ReadObject(stream);
}
await file.DeleteAsync(StorageDeleteOption.PermanentDelete);
}
temp.Add(notes);
StorageFile file1 = await folder.CreateFileAsync("Data", CreationCollisionOption.ReplaceExisting);
using (Stream stream = await file1.OpenStreamForWriteAsync())
{
DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(Notes));
json.WriteObject(stream, temp);
}
}
public static async Task <ObservableCollection <Notes> > GetCollection()
{
ObservableCollection <Notes> temp = new ObservableCollection <Notes>();
StorageFolder folder = ApplicationData.Current.LocalFolder;
if (await AppSystem.FileExists("Data"))
{
StorageFile file = await folder.GetFileAsync("Data.txt");
using (Stream stream = await file.OpenStreamForReadAsync())
{
DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(Notes));
temp = (ObservableCollection <Notes>)json.ReadObject(stream);
}
}
return(temp);
}