private void btnCalculate_Click(object sender, EventArgs e)
{
ShareSellInfo = new ShareSellInfo();
try
{
if (!Helper.Helper.Required(txtSharesSold) || !Helper.Helper.Required(txtPricePerShare) || !Helper.Helper.Required(txtSellDate))
{
return;
}
if (!Helper.Helper.NonNegativeInteger(txtSharesSold) || !Helper.Helper.NonNegativeDecimal(txtPricePerShare) || !Helper.Helper.ValidDate(txtSellDate))
{
return;
}
int soldShares = int.Parse(txtSharesSold.Text);
int remainingShares = lblRemainingShares.Text == String.Empty ? Calc.GetTotalShares() : int.Parse(lblRemainingShares.Text);
if (soldShares > remainingShares)
{
MessageBox.Show("Available shares: " + remainingShares.ToString() + ".");
return;
}
DateTime lastSharePurcahaseDate = Calc.GetLastSharePurchaseDate();
if (DateTime.Parse(txtSellDate.Text) < lastSharePurcahaseDate)
{
MessageBox.Show("Sell Date can not be less than " + lastSharePurcahaseDate.ToString("dd/MM/yyyy") + ".");
return;
}
ShareSellInfo.Quantity = soldShares;
ShareSellInfo.Price = decimal.Parse(txtPricePerShare.Text);
ShareSellInfo.SellingDate = DateTime.Parse(txtSellDate.Text);
ShareRemainingDisplayInfo shareRemainingDisplayInfo = Calc.Calculate(ShareSellInfo);
lblRemainingShares.Text = shareRemainingDisplayInfo.RemainingShares.ToString();
lblCostPriceSoldShares.Text = shareRemainingDisplayInfo.CostPriceSoldShares.ToString();
lblCostPriceRemainingShares.Text = shareRemainingDisplayInfo.CostPriceRemainingSharesPerQuantity.ToString();
lblGainLoss.Text = shareRemainingDisplayInfo.ProfitLoss.ToString();
}
catch (Exception)
{
MessageBox.Show("Something went wrong. Please restart your application.");
}
}
// Calculate data of remaining share, cost price of sold share, cost price of remaining share per quantity and actual Profit or loss.
public ShareRemainingDisplayInfo Calculate(ShareSellInfo shareSellInfo)
{
ShareSellInfomation.Add(shareSellInfo);
int totalSharesPurchase = ShareCostInfomation.Sum(x => x.Quantity);
int totalSharesSold = ShareSellInfomation.Sum(y => y.Quantity);
int remainingShares = totalSharesPurchase - totalSharesSold;
decimal costPriceSoldShares = GetCostPriceSoldShares(ShareCostInfomation, totalSharesSold);
decimal sellPriceSoldShares = GetSellPriceSoldShares(ShareSellInfomation);
decimal CostPriceRemainingShares = GetCostPriceRemainingShares(ShareCostInfomation, costPriceSoldShares);
ShareRemainingDisplayInfo shareRemainingDisplayInfo = new ShareRemainingDisplayInfo();
shareRemainingDisplayInfo.RemainingShares = remainingShares;
shareRemainingDisplayInfo.CostPriceSoldShares = Math.Round(costPriceSoldShares / totalSharesSold, 3);
shareRemainingDisplayInfo.CostPriceRemainingSharesPerQuantity = remainingShares != 0? Math.Round(CostPriceRemainingShares / remainingShares, 8):0;
shareRemainingDisplayInfo.ProfitLoss = Math.Round(sellPriceSoldShares - costPriceSoldShares, 0);
return(shareRemainingDisplayInfo);
}
