/// <summary>
        /// Exports the Investment Object, to be used by other programs
        /// </summary>
        /// <param name="inv">Investment Object to be Exported</param>
        /// <param name="directory">Path and filename to where the file will be saved</param>
        /// <param name="ft">File type for the file</param>
        /// <returns></returns>
        public static Boolean exportInvestment(Investment inv, string directory, FileType ft)
        {
            switch (ft)
            {
                case (FileType.JSON):
                    try
                    {
                        string fullPath = directory;

                        if (!directory.EndsWith(".json"))
                            fullPath += ".json";

                        TextWriter WriteFileStream = new StreamWriter(fullPath + ".json", false);

                        WriteFileStream.Write(JsonConvert.SerializeObject(inv, Formatting.Indented));

                        WriteFileStream.Close();
                        return true;
                    }
                    catch
                    {

                        return false;
                    }

                case (FileType.CSV):

                    try
                    {
                        string fullPath = directory;

                        if (!directory.EndsWith(".csv"))
                            fullPath += ".csv";

                        TextWriter WriteFileStream = new StreamWriter(fullPath + ".csv", false);

                        WriteFileStream.WriteLine(csvHead());
                        WriteFileStream.WriteLine(inv.toCSVLine());

                        WriteFileStream.Close();
                        return true;
                    }
                    catch
                    {

                        return false;
                    }

                default:
                    return false;
            }
        }
 /// <summary>
 /// Remove an investment from the portfolio
 /// </summary>
 /// <param name="inv">The Investment object to be removed</param>
 public Boolean removeInvestment(Investment inv)
 {
     return listOfInvestments.Remove(inv);
 }
        /// <summary>
        /// Add an investment to the portfolio
        /// </summary>
        /// <param name="inv">The Investment object to be added</param>
        public void addInvestment(Investment inv)
        {
            if (listOfInvestments == null)
                listOfInvestments = new List<Investment>();

            listOfInvestments.Add(inv);
        }
        public List<ProfitDay> calculateProfits(CurrencyExchanger ce, Investment i, string data)
        {
            float stockProfit = 0;

            List<ProfitDay> thisCompanyProfits = new List<ProfitDay>();
            DateTime calculateDate = i.BuyTime;

            QueryResult qr = new QueryResult(data, i.Stock.StockName);
            foreach (StockDay sd in qr.StockDays)
            {
                if (sd.Date >= i.BuyTime)
                {
                    stockProfit = (float)(sd.ClosingValue - i.UnitStockValue) * i.Quantity;

                    if (i.Stock.Currency != preferedCurrency)
                    {

                        stockProfit = ce.ExchangeValue(i.Stock.Currency, preferedCurrency, stockProfit);
                    }

                    thisCompanyProfits.Add(new ProfitDay(new DateTime(calculateDate.Year, calculateDate.Month, calculateDate.Day), stockProfit));
                }
            }

            return thisCompanyProfits;
        }
        private void QueryFinished(object sender, RunWorkerCompletedEventArgs e)
        {
            DownloaderResult dr = e.Result as DownloaderResult;

            if (dr.Error != null)
            {
                errorLabel.Text = dr.Error;

                bAdd.Enabled = true;
            }
            else
            {
                try
                {
                Investment inv = new Investment(new Stock(tbCompanyName.Text), Convert.ToInt32(tbQuantityBought.Text), DateTime.Parse(dateTimePicker1.Value.ToShortDateString()), Convert.ToDecimal(tbStockValue.Text.Replace(".", ",")));

                thisPortfolio.addInvestment(inv);

                errorLabel.Text = "";
                this.Close();
                }
                catch(CurrencyParseFailedException)
                {
                    errorLabel.Text = "Failed to get original currency of company stocks.";
                }
                catch(CurrencyNotFoundException)
                {
                    errorLabel.Text = "Failed to perform currency exchange.";
                }
                finally
                {
                    bAdd.Enabled = true;
                }
            }
        }