public App()
{
if (db.GetCurrency(Utils.currencyCodes[0]) == null) // db not initialized
{
// initialize db with default rate (-1) // changed to 1. -1 was giving problems.
foreach (string cod in Utils.currencyCodes)
{
db.UpdateCurrency(new Currency()
{
code = cod, rate = 1.0
});
}
db.SetGlobal("favouriteCurrency", "EUR");
}
foreach (WalletAmount wa in db.GetWalletAmounts())
{
wallet.AddAmount(wa.code, wa.amount);
}
// The root page of your application
var content = new InputValuePage(db, wallet);
MainPage = new NavigationPage(content);
content.UpdateCurrencies();
}
public static void RefreshRates(DatabaseOps db, InputValuePage page)
{
foreach (string code in Utils.currencyCodes)
{
var uri = string.Format("http://download.finance.yahoo.com/d/quotes?f=sl1d1t1&s={0}{1}=X", "EUR", code);
var cb = new AsyncCallback(CallHandler);
CallWebAsync(uri, db, cb, page);
}
}
private static void CallWebAsync(string uri, DatabaseOps db, AsyncCallback cb, InputValuePage page)
{
var request = HttpWebRequest.Create(uri);
request.Method = "GET";
var state = new Tuple <DatabaseOps, WebRequest, InputValuePage>(db, request, page);
request.BeginGetResponse(cb, state);
}
