public void PPmtShouldCalculatedWithoutError(double rate, short period, short numberPeriods, double presentValue, double futureValue, DueDate due)
{
//Arrange
var ppmt = new PPmt();
//Act
var exception = Record.Exception(() => ppmt.CapitalPayment(rate, period, numberPeriods, presentValue, futureValue, due));
//Assert
exception.Should().BeNull();
}
private void button1_Click(object sender, EventArgs e)
{
try
{
double trymonths;
trymonths = double.Parse(textBox3.Text);
if (trymonths < 6 || trymonths > 48)
{
MessageBox.Show("Oops! We don't finance a vehicle for less than 6 months or more than 48 months!");
}
else
{
}
}
catch
{
MessageBox.Show("Oops! Enter the number of months to finance the vehicle for!");
}
dataGridView1.ColumnCount = 5;
dataGridView1.Columns[0].HeaderText = "Payment #";
dataGridView1.Columns[1].HeaderText = "Monthly Payment";
dataGridView1.Columns[2].HeaderText = "Amount to Interest";
dataGridView1.Columns[3].HeaderText = "Amount to Principal";
dataGridView1.Columns[4].HeaderText = "Remaining Balance";
double cost, downpayment, months, rate, topayoff, PPmt, remaining, topayoff2;
if (radioButton1.Checked)
{
rate = 0.069;
}
else
{
rate = 0.085;
}
cost = double.Parse(textBox1.Text);
downpayment = double.Parse(textBox2.Text);
months = double.Parse(textBox3.Text);
topayoff = cost - downpayment;
topayoff2 = topayoff;
dataGridView1.Rows.Clear();
textBox4.Text = rate.ToString((rate) + "%");
for (int payment = 1; payment <= months; payment++)
{
dataGridView1.Rows.Add();
dataGridView1.Rows[payment - 1].Cells[0].Value = payment.ToString();
dataGridView1.Rows[payment - 1].Cells[1].Value = Financial.Pmt(rate / 12, months, -topayoff2).ToString("C");
dataGridView1.Rows[payment - 1].Cells[2].Value = Financial.IPmt(rate / 12, 1, months, -topayoff).ToString("C");
PPmt = Financial.Pmt(rate / 12, months, -topayoff2) - Financial.IPmt(rate / 12, 1, months, -topayoff);
dataGridView1.Rows[payment - 1].Cells[3].Value = PPmt.ToString("C");
remaining = topayoff - PPmt;
dataGridView1.Rows[payment - 1].Cells[4].Value = remaining.ToString("C");
topayoff = remaining;
if (payment % 2 == 0)
{
dataGridView1.Rows[payment - 1].DefaultCellStyle.BackColor = Color.SkyBlue;
}
else
{
dataGridView1.Rows[payment - 1].DefaultCellStyle.BackColor = Color.White;
}
}
}
