public static DataContainer GetInstance()
{
return
(instance==null)?
(instance=load()):
instance;
}
private static DataContainer load()
{
DataContainer lInstance;
var folder = Windows.Storage.ApplicationData.Current.LocalFolder;
//if (File.Exists("data.xml"))
try
{
var deserializer = new XmlSerializer(typeof(DataContainer));
var taskFile = Windows.Storage.ApplicationData.Current.LocalFolder.CreateFileAsync("data.xml", Windows.Storage.CreationCollisionOption.OpenIfExists).AsTask();
taskFile.Wait();
var task = taskFile.Result.OpenStreamForReadAsync();
//var task = folder.OpenStreamForReadAsync("ms-appdata:///local/data.xml");
////task.RunSynchronously();
//task.Wait();
//File.OpenRead
using (var fstream = task.Result)
{
lInstance = (DataContainer)deserializer.Deserialize(fstream);
}
}
catch (FileNotFoundException fnfex)
{
lInstance = new DataContainer()
{
ItemList = new List<Item>(),
//ItemList.Add(new Item() { ItemCode = "ABC", Description = "Alphabet soup", StandardPrice = 13.35M, UnitOfMeasure = "can(s)" });
//ItemList.Add(new Item() { ItemCode = "DEF", Description = "Soup station", StandardPrice = 10M, UnitOfMeasure = "bowl(s)" });
StockList = new List<Stock>(),
//StockList.Add(new Stock() { ItemCode="ABC", StoreCode="DXB", Quantity=3m });
StoreList = new List<Store>(),
//StoreList.Add(new Store() { StoreCode="DXB", Description="Dubai" });
TransactionList = new List<Transaction>()
};
}
catch (Exception ex) {
lInstance = new DataContainer()
{
ItemList = new List<Item>(),
StockList = new List<Stock>(),
StoreList = new List<Store>(),
TransactionList = new List<Transaction>()
};
}
return lInstance;
}