/// <summary>
/// Menu to take the user through all actions.
/// </summary>
static void Menu()
{
string currentMethod = "Menu";
//Instantiating objects.
SupplierDAO supplierDAO = new SupplierDAO();
SupplierDO supplier = new SupplierDO();
//Loop to keep menu selection going.
do
{
//Try catch to get any exeptions that may occur.
try
{
//Menu Options.
Console.Clear();
Console.WriteLine("\t\tPlease select option by pressing a key:\n");
Console.WriteLine(" 1) Display all");
Console.WriteLine(" 2) Create new");
Console.WriteLine(" 3) Update existing");
Console.WriteLine(" 4) Delete");
Console.WriteLine(" 5) Product menu");
Console.WriteLine(" 6) Exit Application");
//Allows user to press either number keys on keyboard or use num pad.
ConsoleKeyInfo keyPressed = Console.ReadKey();
Console.Clear();
//Declaring variables.
int supplierId = 0;
//Creates a new list object called items to store our list object returned from our ViewAllSuppliers().
List <SupplierDO> items = supplierDAO.ViewAllSuppliers();
//Displays an updated supplier list.
if (keyPressed.Key != ConsoleKey.D6 && keyPressed.Key != ConsoleKey.NumPad6)
{
DisplaySuppliers(items);
}
//Determines which key was pressed.
switch (keyPressed.Key)
{
//Display---------------------------------------------------------------------
case ConsoleKey.NumPad1:
case ConsoleKey.D1:
break;
//Create----------------------------------------------------------------------
case ConsoleKey.NumPad2:
case ConsoleKey.D2:
//Passing the object returned from GetUserInput method into the parameters for our CreateNewSuppliers().
supplierDAO.CreateNewSuppliers(GetUserInput());
break;
//Update----------------------------------------------------------------------
case ConsoleKey.NumPad3:
case ConsoleKey.D3:
Console.WriteLine("Please enter Supplier Id for the row you would like to change.");
//Getting the supplier Id that user wants to update.
int.TryParse(Console.ReadLine(), out supplierId);
//Adding information returned from GetUserInput() into our object.
supplier = GetUserInput();
//Setting the value of our object variable for supplierId.
supplier.SupplierId = supplierId;
//Passing all the user input into UpdateSuppliers() using our object named supplier.
supplierDAO.UpdateSuppliers(supplier);
break;
//Delete----------------------------------------------------------------------
case ConsoleKey.NumPad4:
case ConsoleKey.D4:
Console.WriteLine("Please enter Supplier Id.");
//Getting supplier Id that user wants to delete.
int.TryParse(Console.ReadLine(), out supplierId);
//Setting the value of our object variable for supplierId.
supplier.SupplierId = supplierId;
//Passing supplier Id to the DeleteSuppliers() so that user can select which row to delete.
supplierDAO.DeleteSuppliers(supplier.SupplierId);
break;
//Product Menu----------------------------------------------------------------
case ConsoleKey.NumPad5:
case ConsoleKey.D5:
//Products menu.
ProductsMenu();
break;
//Exit-------------------------------------------------------------------------
case ConsoleKey.NumPad6:
case ConsoleKey.D6:
//Exiting the console.
Environment.Exit(0);
break;
default:
break;
}
//Displays updated supply list if user does NOT press 1.
if (keyPressed.Key != ConsoleKey.NumPad1 && keyPressed.Key != ConsoleKey.D1)
{
items = supplierDAO.ViewAllSuppliers();
DisplaySuppliers(items);
}
}
//Catches any exception that gets thrown.
catch (Exception ex)
{
string currentClass = "Program";
//Prints error to console, logs, and restarts the menu.
supplierDAO.SupplierErrorHandler(ex, currentClass, currentMethod, ex.StackTrace);
throw ex;
}
} while (true);
}
