public static void Main()
{
int ItemDBSize = 0;
ItemData[] itemData = new ItemData[10]; // create an array of your ItemData struct
int icount = itemData.Length; // use an interger to keep track of the count of items in your inventory
while (true)
{
// use a never ending loop that shows the user what options they can select
// as long as no one Quits, continue the inventory update
// in that loop, show what user can select from the list
Console.WriteLine();
Console.WriteLine("Please choose from the menu below by entering corresponding number.");
Console.WriteLine(); // Extra line before the menu
Console.WriteLine("1. Add an item");
Console.WriteLine("2. Change an item (by giving its item number)");
Console.WriteLine("3. Delete an item");
Console.WriteLine("4. List all items in the database");
Console.WriteLine("5. Quit");
// read the user's input and then create what case it falls
string strx = Console.ReadLine(); // read user's input
int optx = int.Parse(strx); // convert the given string to integer to match our case types shown below
Console.WriteLine(); // provide an extra blank line on screen
switch (optx)
{
case 1: // add an item to the list if this option is selected
{
// Each item must have the following information:
// Item #, Description, Price per item, Quantity on hand, Our cost per item, Value of item (price*quantity)
if (ItemDBSize >= 100)
{
Console.WriteLine("Database is full.");
break;
}
if (itemData.Length == ItemDBSize) // identify if it will exceed length
{
int n = itemData.Length + 1; // create a new array with a longer length
ItemData[] newitemData = new ItemData[n];
itemData.CopyTo(newitemData, 0); // copy the old into the new
itemData = newitemData; // delete the old array
}
Console.WriteLine("Enter Item #: ");
string stritemIDNo = Console.ReadLine();
itemData[ItemDBSize].itemIDNo = int.Parse(stritemIDNo); // The input from user is converted from a string and placed in the array.
Console.WriteLine("Description of Item: ");
itemData[ItemDBSize].sDescription = Console.ReadLine();
Console.WriteLine("Price per item: ");
string strPricePerItem = Console.ReadLine();
itemData[ItemDBSize].dblPricePerItem = double.Parse(strPricePerItem);
Console.WriteLine("Quantity on hand: ");
string striQuantityOnHand = Console.ReadLine();
itemData[ItemDBSize].iQuantityOnHand = int.Parse(striQuantityOnHand);
Console.WriteLine("Our cost per item: ");
string strOurCost = Console.ReadLine();
itemData[ItemDBSize].dblOurCostPerItem = double.Parse(strOurCost);
double ValueofItem = (itemData[ItemDBSize].dblPricePerItem) * (itemData[ItemDBSize].iQuantityOnHand);
itemData[ItemDBSize].dblValueOfItem = ValueofItem;
Console.WriteLine("Value of item = {0}", ValueofItem);
ItemDBSize++;
break;
}
case 2: //change items in the list if this option is selected
{
Console.Write("Please enter an item ID No:");
string strchgid = Console.ReadLine();
int chgid = int.Parse(strchgid);
bool fFound = false;
// icount = itemData.Length;
for (int x = 0; x < ItemDBSize; x++)
{
if (itemData[x].itemIDNo == chgid)
{
fFound = true;
// code to show what has to happen if the item in the list is found
// display all that specific item information
Console.WriteLine();
Console.WriteLine("Item# ItemID Description Price QOH Cost Value");
Console.WriteLine("----- ------ -------------------- ----- --- ---- -----");
Console.Write("{0,5} ", x + 1);
Console.Write("{0,6} ", itemData[x].itemIDNo);
Console.Write("{0,-20} ", itemData[x].sDescription);
Console.Write("{0,5} ", itemData[x].dblPricePerItem);
Console.Write("{0,3} ", itemData[x].iQuantityOnHand);
Console.Write("{0,4} ", itemData[x].dblOurCostPerItem);
Console.Write("{0,5} ", itemData[x].dblValueOfItem);
Console.WriteLine();
// Asking if user would like to edit specific parts of this item or edit entire item
Console.WriteLine();
Console.WriteLine("Please choose what you would like to edit from menu below by entering the corresponding list number: ");
Console.WriteLine("1. Item # ");
Console.WriteLine("2. Description of Item ");
Console.WriteLine("3. Price per item ");
Console.WriteLine("4. Quantity on Hand");
Console.WriteLine("5. Our Cost Per Item");
Console.WriteLine("6. Multiple parts of this item");
string stredit = Console.ReadLine();
int edit = int.Parse(stredit);
if (edit == 1)
{
Console.Write("Edit Item #: ");
string stritemIDNo = Console.ReadLine();
itemData[x].itemIDNo = int.Parse(stritemIDNo); // The input from user is converted from a string and placed in the array.
}
if (edit == 2)
{
Console.WriteLine("Edit Description: ");
itemData[x].sDescription = Console.ReadLine();
}
if (edit == 3)
{
Console.Write("Edit Price Per Item: ");
string strPricePerItem = Console.ReadLine();
itemData[x].dblPricePerItem = double.Parse(strPricePerItem);
}
if (edit == 4)
{
Console.WriteLine("Edit Quantity on hand: ");
string striQuantityOnHand = Console.ReadLine();
itemData[x].iQuantityOnHand = int.Parse(striQuantityOnHand);
}
if (edit == 5)
{
Console.WriteLine("Edit Our cost per item: ");
string strOurCost = Console.ReadLine();
itemData[x].dblOurCostPerItem = double.Parse(strOurCost);
}
if (edit == 6)
{
Console.WriteLine("Enter Item #: ");
string stritemIDNo = Console.ReadLine();
itemData[x].itemIDNo = int.Parse(stritemIDNo); // The input from user is converted from a string and placed in the array.
Console.WriteLine("Description of Item: ");
itemData[x].sDescription = Console.ReadLine();
Console.WriteLine("Price per item: ");
string strPricePerItem = Console.ReadLine();
itemData[x].dblPricePerItem = double.Parse(strPricePerItem);
Console.WriteLine("Quantity on hand: ");
string striQuantityOnHand = Console.ReadLine();
itemData[x].iQuantityOnHand = int.Parse(striQuantityOnHand);
Console.WriteLine("Our cost per item: ");
string strOurCost = Console.ReadLine();
itemData[x].dblOurCostPerItem = double.Parse(strOurCost);
}
double ValueofItem = (itemData[x].dblPricePerItem) * (itemData[x].iQuantityOnHand);
itemData[x].dblValueOfItem = ValueofItem;
Console.WriteLine("Value of item = {0}", ValueofItem);
if (edit < 1 || edit > 6)
{
Console.WriteLine("Invalid entry.");
break;
}
// reset the count to show a new count for your list
// (Note: your list is now increased by one item)
}
}
if (!fFound) // and if not found
{
Console.WriteLine("Item {0} not found", chgid);
}
break;
}
case 3: //delete items in the list if this option is selected
{
Console.Write("Please enter an item ID No:");
string strnewid = Console.ReadLine();
int newid = int.Parse(strnewid);
bool fDeleted = false;
// What happens if user wants to delete upper bound index of array?
int index = 0;
for (index = newid - 1; index < ItemDBSize; index++)
{
if (itemData[index].itemIDNo == newid)
{
fDeleted = true;
for (; index < itemData.Length - 1; index++)
{
itemData[index] = itemData[index + 1]; // delete the item if you found it
}
ItemDBSize--; // reset the count to show a new count for your list
} //(Note: your list is now reduced by one item)
}
if (fDeleted) // hint the user that you deleted the requested item
{
Console.WriteLine("Item deleted");
}
else // if did not find it, hint the user that you did not find it in your list
{
Console.WriteLine("Item {0} not found", newid);
}
break;
}
case 4: //list all items in current database if this option is selected
{
Console.WriteLine("Item# ItemID Description Price QOH Cost Value");
Console.WriteLine("----- ------ -------------------- ----- --- ---- -----");
icount = itemData.Length;
for (int x = 0; x < icount; x++)
{
if (itemData[x].itemIDNo != 0) //Only display if the item number is not 0 -- only the array index with item info will display
{
Console.Write("{0,5} ", x + 1);
Console.Write("{0,6} ", itemData[x].itemIDNo);
Console.Write("{0,-20} ", itemData[x].sDescription);
Console.Write("{0,5} ", itemData[x].dblPricePerItem);
Console.Write("{0,3} ", itemData[x].iQuantityOnHand);
Console.Write("{0,4} ", itemData[x].dblOurCostPerItem);
Console.Write("{0,5} ", itemData[x].dblValueOfItem);
Console.WriteLine();
}
}
// code in this block. Use the above line format as a guide for printing or displaying the items in your list right under it
break;
}
case 5: //quit the program if this option is selected
{
Console.Write("Are you sure that you want to quit(y/n)?");
string strresp = Console.ReadLine();
if (strresp == "y")
{
optx = 0; //as long as it is not 5, the process is not breaking
}
break;
}
default:
{
Console.Write("Invalid Option, try again");
break;
}
}
}
}
