private void btnCalculate_Click(object sender, EventArgs e)
{
decimal subtotal = 0m;
decimal discountPercent = 0m;
// #1: if
//subtotal = Decimal.Parse(input1aTextBox.Text);
//if (subtotal >= 100m)
// discountPercent = 0.2m;
//result1TextBox.Text = discountPercent.ToString("n2");
result1TextBox.Text = Ex2fCalculations.Calc01(input1aTextBox.Text);
// #2: if {block}
//subtotal = Decimal.Parse(input2aTextBox.Text);
//discountPercent = 0m;
//string status = "Standard rate: ";
//if (subtotal >= 100)
//{
// discountPercent = 0.2m;
// status = "Bulk rate: ";
//}
//result2TextBox.Text = status + discountPercent.ToString("n2");
result2TextBox.Text = Ex2fCalculations.Calc02(input2aTextBox.Text);
// #3: if else
//subtotal = Decimal.Parse(input3aTextBox.Text);
//discountPercent = 0m;
//if (subtotal >= 100m)
// discountPercent = 0.2m;
//else
// discountPercent = 0.1m;
//result3TextBox.Text = discountPercent.ToString("n2");
result3TextBox.Text = Ex2fCalculations.Calc03(input3aTextBox.Text);
// #4: if else if
//subtotal = Decimal.Parse(input4aTextBox.Text);
//discountPercent = 0m;
//if (subtotal >= 100m && subtotal < 200)
// discountPercent = 0.2m;
//else if (subtotal >= 200m && subtotal < 300)
// discountPercent = 0.3m;
//else if (subtotal >= 300m)
// discountPercent = 0.4m;
//else
// discountPercent = 0.1m;
//result4TextBox.Text = discountPercent.ToString("n2");
result4TextBox.Text = Ex2fCalculations.Calc04(input4aTextBox.Text);
// #5: Better range test
//subtotal = Decimal.Parse(input5aTextBox.Text);
//discountPercent = 0m;
//if (subtotal >= 300m)
// discountPercent = 0.4m;
//else if (subtotal >= 200m)
// discountPercent = 0.3m;
//else if (subtotal >= 100m)
// discountPercent = 0.2m;
//else
// discountPercent = 0.1m;
//result5TextBox.Text = discountPercent.ToString("n2");
result5TextBox.Text = Ex2fCalculations.Calc05(input5aTextBox.Text);
// #6: Nested if statements
//subtotal = Decimal.Parse(input6aTextBox.Text);
//string customerType = input6bTextBox.Text;
//discountPercent = 0m;
//if (customerType == "R")
//{
// if (subtotal >= 100m)
// discountPercent = 0.2m;
// else
// discountPercent = 0.1m;
//}
//else
// discountPercent = 0.4m;
//result6TextBox.Text = discountPercent.ToString("n2");
result6TextBox.Text = Ex2fCalculations.Calc06(input6aTextBox.Text, input6bTextBox.Text);
// #7: Input Validation
result7TextBox.Text = Ex2fCalculations.Calc07(input7aTextBox.Text);
// #8: input validation, calculate total and shipping
result8TextBox.Text = Ex2fCalculations.Calc08(input8aTextBox.Text, input8bTextBox.Text);
// #9: input validation, result = 0.1 * difference
result9TextBox.Text = Ex2fCalculations.Calc09(input9aTextBox.Text, input9bTextBox.Text);
// #10 Validate input, divide large num by small
result10TextBox.Text = Ex2fCalculations.Calc10(input10aTextBox.Text, input10bTextBox.Text);
}
