// Computes leasing info
private void btnCompute_Click(object sender, EventArgs e)
{
if (comboBoxTime.SelectedItem == null || comboBoxInterest.SelectedItem == null) MessageBox.Show("Моля изберете период и лихвен процент.", "Невалидни данни", MessageBoxButtons.OK, MessageBoxIcon.Error);
else
{
var totalResult = Mathematics.CalculateSimpleInterest(CurrentComputer.Price, int.Parse((comboBoxInterest.SelectedItem as string).TrimEnd('%')), int.Parse(comboBoxTime.SelectedItem as string));
lblTotalValue.Text = totalResult.ToString("C");
lblMonthlyValue.Text = (totalResult / int.Parse(comboBoxTime.SelectedItem as string)).ToString("C");
lblTotalValue.Visible = true;
lblMonthlyValue.Visible = true;
}
}
private void InitializeFields()
{
lblIDval.Text = CurrentComputer.ID.ToString();
lblNumOFPartsVal.Text = CurrentComputer.Count.ToString();
lblTotalPriceVal.Text = CurrentComputer.Price.ToString("C");
lblAvgVal.Text = Mathematics.GetAveragePrice(CurrentComputer).ToString("C");
lblMedianVal.Text = Mathematics.CalculateMedian(CurrentComputer).ToString("C");
comboBoxTime.Items.Clear();
comboBoxInterest.Items.Clear();
comboBoxTime.Items.AddRange(Mathematics.lisingMonths);
comboBoxInterest.Items.AddRange(Mathematics.interestPercentages);
var cheapestPart = Mathematics.GetCheapestPart(CurrentComputer);
var expPart = Mathematics.GetMostExpensivePart(CurrentComputer);
lblTotalValue.Visible = false;
lblMonthlyValue.Visible = false;
lblCheapestVal.Text = $"{cheapestPart.GetType().Name}: {cheapestPart.Price:C}";
lblExpVal.Text = $"{expPart.GetType().Name}: {expPart.Price:C}";
}