private void btnAddCone_Click(object sender, EventArgs e)
{
Cone cone;
int scoops = 0;
//int custID = 0;
try {
if (Convert.ToInt32(maskCustID2.Text) != custID)
{
custID = Convert.ToInt32(maskCustID2.Text);
foreach (Customer cust in customers)
{
if (cust.ID == custID)
{
//ctOrder.Cust = cust;
ctOrder = new Order(cust);
break;
}
}
}
}
catch (FormatException) {
MessageBox.Show("Please input customer ID. ", "Error! ");
return;
}
if (radioIceCream.Checked == true)
{
cone = new IceCream();
}
else if (radioYogurt.Checked == true)
{
cone = new Yogurt();
}
else
{
MessageBox.Show("Check either Ice Cream or Yogurt. ", "Error! ");
return;
}
try{
scoops = Convert.ToInt32(maskScoops.Text);
}catch (FormatException) {
MessageBox.Show("Number of scoops must be entered. ", "Error! ");
return;
}
if (scoops == 0)
{
MessageBox.Show("Number of scoops must be a non zero number. ", "Error! ");
return;
}
cone.NumScoops = scoops;
if (listFlavor.SelectedIndex == -1)
{
MessageBox.Show("Please select a flavor. ", "Error! ");
return;
}
cone.ConeFlavor = listFlavor.SelectedItem.ToString();
try {
ctOrder += cone;
}
catch (ArgumentException ex) {
MessageBox.Show(ex.Message, "Error! ");
return;
}
txtOrderInfo.Text = ctOrder.ToString().Replace("\n", "\r\n");
}//end handler
public void readFromFile(String fname, ArrayList customerList)
{
if (fname2 != fname) {//restart the process if the file changes
firstRun = true;
fname2 = fname;
}
try {
if (firstRun) {
infile = new FileStream(fname, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
//reader = new StreamReader(infile);
firstRun = false;
}
String str = infile.readLine();
String[] tokens = str.Split(new char[] { ',' });
if (String.Equals(tokens[0], "Order", StringComparison.OrdinalIgnoreCase)) {
//then we are reading an order
//Order,orderNum,customerNum,numCones
this.OrderNum = Convert.ToInt32(tokens[1]);
int customerNum = Convert.ToInt32(tokens[2]);//read customer number
foreach(Customer cust in customerList)//match customer number to customer
if (cust.ID == customerNum) {
this.cust = cust;
break;
}
if(this.cust == null)
throw new IOException("Customer in input file not found. ");
int numCones = Convert.ToInt32(tokens[3]);
if (numCones > 10)
throw new IOException("An order contains more than 10 cones. ");
for (int i = 0; i < numCones; i++) {
try {
//try to read an ice cream cone
IceCream cream = new IceCream();
cream.readFromFile(infile);
this.addCone(cream);
}
catch (ConeTypeMismatchException) {
//else read a yogurt cone
Yogurt yogurt = new Yogurt();
yogurt.readFromFile(infile);
this.addCone(yogurt);
}
}//end loop
}
else
throw new IOException("Order object not encountered in file. ");//non-cone data
}
catch (System.IO.FileNotFoundException) { throw; }//file not found
catch (System.NullReferenceException) {
//something is wrong with the input file, or most likely end of file
infile.Close();//close the file
infile = null;//deallocate memory
firstRun = true;
throw;//inform calling method there are no more records
}
catch (FormatException) { throw; }//input is not in the right format
}
static String fname2;//used to determine if the file has been changed for some reason
public void readFromFile(String fname, ArrayList customerList) {
if (fname2 != fname) {//restart the process if the file changes
firstRun = true;
fname2 = fname;
}
try {
if (firstRun) {
infile = new FileStream(fname, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
//reader = new StreamReader(infile);
firstRun = false;
}
String str = infile.readLine();
String[] tokens = str.Split(new char[] { ',' });
if (String.Equals(tokens[0], "Order", StringComparison.OrdinalIgnoreCase)) {
//then we are reading an order
//Order,orderNum,customerNum,numCones
this.OrderNum = Convert.ToInt32(tokens[1]);
int customerNum = Convert.ToInt32(tokens[2]);//read customer number
foreach(Customer cust in customerList)//match customer number to customer
if (cust.ID == customerNum) {
this.cust = cust;
break;
}
if(this.cust == null)
throw new IOException("Customer in input file not found. ");
int numCones = Convert.ToInt32(tokens[3]);
if (numCones > 10)
throw new IOException("An order contains more than 10 cones. ");
for (int i = 0; i < numCones; i++) {
try {
//try to read an ice cream cone
IceCream cream = new IceCream();
cream.readFromFile(infile);
this.addCone(cream);
}
catch (ConeTypeMismatchException) {
//else read a yogurt cone
Yogurt yogurt = new Yogurt();
yogurt.readFromFile(infile);
this.addCone(yogurt);
}
}//end loop
}
else
throw new IOException("Order object not encountered in file. ");//non-cone data
}
catch (System.IO.FileNotFoundException) { throw; }//file not found
catch (System.NullReferenceException) {
//something is wrong with the input file, or most likely end of file
infile.Close();//close the file
infile = null;//deallocate memory
firstRun = true;
throw;//inform calling method there are no more records
}
catch (FormatException) { throw; }//input is not in the right format
}//end method