private void buttonPERatio_Click(object sender, RoutedEventArgs e)
{
// Clear the display, then validate the inputs...
labelPERatio.Content = "£-.--";
stockData stock = null;
Decimal stockPrice = 0.0M;
if (ValidateGetPrice(textPrice.Text, out stockPrice) == false)
{
return;
}
if (ValidateGetStock(out stock) == false)
{
return;
}
// Call the calculation function and display...
Decimal?dividendYield = GetDividendYield(stock, stockPrice);
if (dividendYield != null)
{
if (dividendYield == 0)
{
if (sender is Button) // Don't show messagebox if called from listbox)
{
MessageBox.Show("Sorry, cannot calculate the P/E Ration with a dividend of zero.", "JP", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
else
{
labelPERatio.Content = ((decimal)(stockPrice / dividendYield)).ToString("0.000");
}
}
}
private bool ValidateGetStock(out stockData stockData)
{
if (listStockType.SelectedItem == null)
{
MessageBox.Show("Please select a stock symbol.", "JP", MessageBoxButton.OK, MessageBoxImage.Error);
stockData = null;
return(false);
}
//Find the relevant stock details from our allStock list...
string stockSymbol = listStockType.SelectedItem.ToString();
stockData = allStock.FirstOrDefault(st => st.symbol == stockSymbol);
if (stockData == null)
{
MessageBox.Show("Sorry, unrecognised stock symbol [" + stockSymbol + "].", "JP", MessageBoxButton.OK, MessageBoxImage.Error);
}
return(stockData != null);
}
private decimal?GetDividendYield(stockData stock, decimal stockPrice)
{
// Perform the correct dividend calculation, according to the information in the class
decimal?dividendYield = null;
switch (stock.type)
{
case "Common":
dividendYield = stock.lastDividend / stockPrice;
break;
case "Preferred":
dividendYield = (stock.fixedDividend * stock.parValue / 100M) / stockPrice;
break;
default:
MessageBox.Show("Sorry, unrecognised stock type [" + stock.type + "].", "JP", MessageBoxButton.OK, MessageBoxImage.Error);
break;
}
return(dividendYield);
}
private void buttonDividendYield_Click(object sender, RoutedEventArgs e)
{
// Clear the display, then validate the inputs...
labelDividendYield.Content = "£-.--";
stockData stock = null;
Decimal stockPrice = 0.0M;
if (ValidateGetPrice(textPrice.Text, out stockPrice) == false)
{
return;
}
if (ValidateGetStock(out stock) == false)
{
return;
}
// Call the calculation function and display...
Decimal?dividendYield = GetDividendYield(stock, stockPrice);
if (dividendYield != null)
{
labelDividendYield.Content = "£" + ((Decimal)dividendYield).ToString("0.000");
}
}