private void btnAddCarpet_Click(object sender, EventArgs e)
{
double price;
//Check if textbox is empty or has a white spaces
if (string.IsNullOrWhiteSpace(txtName.Text))
{
//Display Error message
MessageBox.Show("Carpet Name empty! Please re-enter");
//Clear textbox
txtName.Clear();
//Focus on text box
txtName.Focus();
}
else if (string.IsNullOrWhiteSpace(txtQuality.Text))
{
//Display Error message
MessageBox.Show("Carpet Quality empty! Please re-enter");
//Clear textbox
txtQuality.Clear();
//Focus on text box
txtQuality.Focus();
}
else if (double.TryParse(txtPrice.Text, out price) == false)
{
//Display Error message
MessageBox.Show("Carpet Price invalid! Please re-enter");
//Clear textbox
txtPrice.Clear();
//Focus on text box
txtPrice.Focus();
}
else
{
//All data validation has passed - add carpet to the list
//Create temp carpet object
Carpet myCarpet = new Carpet();
//Add information from the form to the carpet object
myCarpet.Name = txtName.Text;
myCarpet.Quality = txtQuality.Text;
myCarpet.Price = price;
//Add object to list of carpets - arraylist in Main form
FrmMain.carpets.Add(myCarpet);
//let the user know carpet is added
MessageBox.Show("Carpet Added!");
//Clear textboxes to allow user to add a new carpet
txtName.Clear();
txtPrice.Clear();
txtQuality.Clear();
//Set focus on name textbox
txtName.Focus();
}
}
private void btnDisplayCost_Click(object sender, EventArgs e)
{
btnBack.Visible = true;
Carpet selectedCt = new Carpet();
Room selectedRm = new Room();
int carpetNum,
roomNum;
double totalCost;
//Figure out which carpet and room is selected
carpetNum = cmbCarpet.SelectedIndex;
roomNum = cmbRoom.SelectedIndex;
//Find the correct carpet and room in thier respective lists
selectedCt = (Carpet)FrmMain.carpets[carpetNum];
selectedRm = (Room)FrmMain.rooms[roomNum];
totalCost = selectedRm.CalculateArea() * selectedCt.Price;
//Display out in rich textbox
rtbOutput.Text = selectedCt.ToString() + "\n" +
selectedRm.ToString() +
"\nTotal Cost: " + totalCost.ToString("C");
}