}//fill comboboxes
//precondition: none
//postcondition: book form loaded and editing done through form
private void bookBtn_Click(object sender, EventArgs e)
{ //precondition: none
//postcondition: brings up book form
if (bookComboBox.SelectedIndex >= 0) //make sure something is selected
{
BookForm bookForm = new BookForm();
bookForm.ItemTitle = _items[bookComboBox.SelectedIndex].Title;
bookForm.ItemPublisher = _items[bookComboBox.SelectedIndex].Publisher;
bookForm.ItemLoanPeriod = _items[bookComboBox.SelectedIndex].LoanPeriod.ToString();
bookForm.ItemCopyrightYear = _items[bookComboBox.SelectedIndex].CopyrightYear.ToString();
bookForm.ItemCallNumber = _items[bookComboBox.SelectedIndex].CallNumber;
//adds in text to boxes
DialogResult result = bookForm.ShowDialog(); // show form
if (result == DialogResult.OK) // make sure ok is clicked
{
_items[bookComboBox.SelectedIndex].Title = bookForm.ItemTitle;
_items[bookComboBox.SelectedIndex].Publisher = bookForm.ItemPublisher;
_items[bookComboBox.SelectedIndex].LoanPeriod = int.Parse(bookForm.ItemLoanPeriod);
_items[bookComboBox.SelectedIndex].CopyrightYear = int.Parse(bookForm.ItemCopyrightYear);
_items[bookComboBox.SelectedIndex].CallNumber = bookForm.ItemCallNumber;
//edits properties to match text boxes
}
}
}
// Precondition: clicked on edit book item on menu
// Postcondition: dialog box will appear to choose item that is going to be edited
// user will make selection, then book form will appear that is populated
// with book data that will be edited
private void itemToolStripMenuItem1_Click(object sender, EventArgs e)
{
EditBookSelectionForm editBookForm = new EditBookSelectionForm(_lib.GetItemsList()); // form to choose book that is going to be edited
DialogResult result = editBookForm.ShowDialog(); // result from edit book form
int bookIndex; // selected book index
if (result == DialogResult.OK)
{
LibraryBook book;
bookIndex = editBookForm.SelectedBookIndex; // selected index
book = (LibraryBook)_lib._items[bookIndex];
BookForm bookForm = new BookForm(); // book form to edit book object
// passing book object data to book form
bookForm.BookAuthor = book.Author;
bookForm.ItemCallNumber = book.CallNumber;
bookForm.ItemCopyrightYear = book.CopyrightYear.ToString();
bookForm.ItemLoanPeriod = book.LoanPeriod.ToString();
bookForm.ItemPublisher = book.Publisher;
bookForm.ItemTitle = book.Title;
DialogResult result2 = bookForm.ShowDialog(); // show book form
if (result2 == DialogResult.OK) // result ok? then the book now has edited values
{
//get data back from form and update book object
book.Author = bookForm.BookAuthor;
book.CallNumber = bookForm.ItemCallNumber;
book.Title = bookForm.ItemTitle;
book.Publisher = bookForm.ItemPublisher;
book.CopyrightYear = int.Parse(bookForm.ItemCopyrightYear);
book.LoanPeriod = int.Parse(bookForm.ItemLoanPeriod);
}
}
}
// Precondition: BookEdit, Edit menu item activated
// Postcondition: The BookEdit dialog box is displayed. If data entered
// are OK, file is opened
private void bookToolStripMenuItem1_Click(object sender, EventArgs e)
{
List <LibraryItem> items; //list of items
items = _lib.GetItemsList();
if (items.Count == 0) // Must have items in list
{
MessageBox.Show("Must have an item in the Library");
}
else
{
BookEdit bEditForm = new BookEdit(items); //dialogbox form book
DialogResult result = bEditForm.ShowDialog();
if (result == DialogResult.OK) //Only allows selection if ok
{
BookForm bookEditor = new BookForm();
LibraryBook item = (LibraryBook)items[bEditForm.BookIndex];
DialogResult edited = bookEditor.ShowDialog(); //Opens the BookForm to edit
if (edited == DialogResult.OK) //Only edits if ok
{
item.Title = bookEditor.ItemTitle;
item.Publisher = bookEditor.ItemPublisher;
item.CopyrightYear = int.Parse(bookEditor.ItemCopyrightYear);
item.LoanPeriod = int.Parse(bookEditor.ItemLoanPeriod);
item.CallNumber = bookEditor.ItemCallNumber;
}
bookEditor.Dispose();
}
}
}
private void bookToolStripMenuItem_Click(object sender, EventArgs e)
{
//creates the book subform and opens it.
BookForm bookForm = new BookForm();
DialogResult result; //Holds the dialog result
string title; //holds the title of the book
string publisher; //holds the publisher of the book
int copyRightYear; //holds the copyRightYear of the book
int loanPeriod; //holds the loanPeriod of the book
string callNum; //holds the callNum of the book
string author; //holds the author of the book
result = bookForm.ShowDialog();
if (result == DialogResult.OK) // Update when user clicks OK
{
title = bookForm.Title;
publisher = bookForm.Publisher;
copyRightYear = int.Parse(bookForm.CopyRightYear);
loanPeriod = int.Parse(bookForm.LoanPeriod);
callNum = bookForm.CallNumber;
author = bookForm.Author;
newLibrary.AddLibraryBook(title, publisher, copyRightYear, loanPeriod, callNum, author);
}
}
//Preconditions: Edit, Book menu item activated
//Postconditions: Opens a dialog box to select a book to edit, and another form to edit the book
private void bookToolStripMenuItem1_Click(object sender, EventArgs e)
{
List <LibraryItem> items; //list of items
items = _lib.GetItemsList();
if (items.Count == 0) // Must have items in list
{
MessageBox.Show("Must have an item in the Library");
}
else
{
LibraryItemEdit edit = new LibraryItemEdit(items);
DialogResult result = edit.ShowDialog();
if (result == DialogResult.OK) //Only allows selection if ok
{
LibraryItem item = items[edit.ItemIndex];
BookForm editor = new BookForm(); //seperate form but same format from bookform
DialogResult edited = editor.ShowDialog(); //Opens the BookForm to edit
if (edited == DialogResult.OK) //Only edits if ok
{
item.Title = editor.ItemTitle;
item.Publisher = editor.ItemPublisher;
item.CopyrightYear = int.Parse(editor.ItemCopyrightYear);
item.LoanPeriod = int.Parse(editor.ItemLoanPeriod);
item.CallNumber = editor.ItemCallNumber;
}
editor.Dispose();
}
}
}
private void bookToolStripMenuItem1_Click(object sender, EventArgs e)
{
List <LibraryItem> items; // List of Items
items = _lib.GetItemsList(); // gets list of items from library
EditBookForm editBookForm = new EditBookForm(items); // pass items to the form
BookForm editSelectedBook = new BookForm(); // create new book form
DialogResult result = editBookForm.ShowDialog(); // Show form as dialog and store result
// ensure user clicked OK
if (result == DialogResult.OK)
{
try
{
int bookCopyrightYear; // holds copyright year
int bookLoanPeriod; // holds load period
LibraryBook selectedItem = (LibraryBook)items[editBookForm.ItemIndex]; // stores selected book
editSelectedBook.ItemTitle = selectedItem.Title;
editSelectedBook.ItemPublisher = selectedItem.Publisher;
editSelectedBook.ItemCopyrightYear = selectedItem.CopyrightYear.ToString();
editSelectedBook.ItemLoanPeriod = selectedItem.LoanPeriod.ToString();
editSelectedBook.ItemCallNumber = selectedItem.CallNumber;
editSelectedBook.BookAuthor = selectedItem.Author;
int.TryParse(editSelectedBook.ItemCopyrightYear, out bookCopyrightYear);
int.TryParse(editSelectedBook.ItemLoanPeriod, out bookLoanPeriod);
result = editSelectedBook.ShowDialog(); // show form as dialog for selected book
_lib._items.RemoveAt(editBookForm.ItemIndex); // the book being edited is removed
LibraryBook editedBook = new LibraryBook(editSelectedBook.ItemTitle, editSelectedBook.ItemPublisher, bookCopyrightYear, bookLoanPeriod, editSelectedBook.ItemCallNumber, editSelectedBook.BookAuthor);
_lib._items.Insert(editBookForm.ItemIndex, editedBook); // the edited version of the book is added
}
catch (InvalidCastException)
{
MessageBox.Show("Select a Book Item!"); // error if selected item is not a book
}
catch (ArgumentOutOfRangeException)
{
MessageBox.Show("Select a Book!"); // error if no book selected
}
}
editBookForm.Dispose(); // Good .NET practice - will get garbage collected anyway
}
//Precondition: Insert -> book item is activated
//Postcondition: New book is inserted
private void bookToolStripMenuItem_Click(object sender, EventArgs e)
{
BookForm bookForm = new BookForm();
DialogResult result = bookForm.ShowDialog();
if (result == DialogResult.OK)
{
library.AddLibraryBook(bookForm.BookTitle, bookForm.BookPublisher, int.Parse(bookForm.BookCopyright),
int.Parse(bookForm.BookLoanPeriod), bookForm.BookCallNumber, bookForm.BookAuthor);
}
}
//Preconditions: user clicks edit then clicks book. user must select an item from the combo box
//Postconditions: dialog box shows up with the books current information loaded into it. user can then change the info
private void bookToolStripMenuItem1_Click(object sender, EventArgs e)
{
List <LibraryItem> items = lib.GetItemsList(); //reference library items
List <LibraryItem> bookList = new List <LibraryItem>(); //create new list of only library books
List <int> bookIndecies = new List <int>(); //creates index of which book is stored in the index in the items list
for (int i = 0; i < items.Count; ++i)
{
if (items[i] is LibraryBook)
{
bookList.Add(items[i]);
bookIndecies.Add(i);
}
}
if ((bookList.Count() == 0))
{
MessageBox.Show("Must have books in the book list");
}
else
{
EditBookForm editBookForm = new EditBookForm(bookList);
DialogResult result1 = editBookForm.ShowDialog();
if (result1 == DialogResult.OK)
{
int itemIndex; //to hold index
itemIndex = bookIndecies[editBookForm.ItemIndex];
BookForm bookForm = new BookForm();
LibraryBook books = (LibraryBook)items[itemIndex]; //downcast
bookForm.ItemTitle = items[itemIndex].Title;
bookForm.ItemPublisher = items[itemIndex].Publisher;
bookForm.ItemCopyrightYear = items[itemIndex].CopyrightYear.ToString();
bookForm.ItemLoanPeriod = items[itemIndex].LoanPeriod.ToString();
bookForm.ItemCallNumber = items[itemIndex].CallNumber;
bookForm.BookAuthor = books.Author; //from downcast
DialogResult result2 = bookForm.ShowDialog();
if (result2 == DialogResult.OK)
{
items[itemIndex].Title = bookForm.ItemTitle;
items[itemIndex].Publisher = bookForm.ItemPublisher;
items[itemIndex].CopyrightYear = int.Parse(bookForm.ItemCopyrightYear);
items[itemIndex].LoanPeriod = int.Parse(bookForm.ItemLoanPeriod);
items[itemIndex].CallNumber = bookForm.ItemCallNumber;
books.Author = bookForm.BookAuthor; //from downcast
}
}
}
}
//Precondition: none
//Postcondition: This will use the Book form to allow the user to input new books and return them onto a report.
private void bookToolStripMenuItem_Click(object sender, EventArgs e)
{
BookForm inputForm = new BookForm();
DialogResult result = inputForm.ShowDialog();
if (result == DialogResult.OK)
{
string title = inputForm.BookTitle;
string author = inputForm.BookAuthor;
string callNumber = inputForm.BookCallNumber;
string loanPeriod = inputForm.BookLoanPeriod;
string copyrightYear = inputForm.BookCopyrightYear;
}
}
// Precondition: Edit, book menu item activated
// Postcondition: The edit book dialog box is displayed.
// and a book can be selected from the combobox
private void bookToolStripMenuItem1_Click(object sender, EventArgs e)
{
List <LibraryItem> items; //List of Library Items
items = lib.GetItemsList();
EditBook editBook = new EditBook(items);//opens edit book dialogbox
DialogResult result = editBook.ShowDialog();
int bookIndex;
bookIndex = editBook.ItemIndex;//sets bookindex to book index from combobox
//Precondition:User clicks ok on Book Form
//Postcondition: Populates list with new book information
if (result == DialogResult.OK)
{
LibraryBook book = (LibraryBook)lib._items[bookIndex];
BookForm bookform = new BookForm();//book form dialog box is opened
//Sets textboxs to have information from selected book
bookform.ItemTitle = book.Title;
bookform.ItemPublisher = book.Publisher;
bookform.ItemCopyrightYear = book.CopyrightYear.ToString();
bookform.ItemLoanPeriod = book.LoanPeriod.ToString();
bookform.ItemCallNumber = book.CallNumber;
bookform.BookAuthor = book.Author;
DialogResult result2 = bookform.ShowDialog();
//Precondition:User selects a book
//Postcondition: book information is set to book form textboxes
if (result2 == DialogResult.OK)
{
book.Title = bookform.ItemTitle;
book.Publisher = bookform.ItemPublisher;
book.CopyrightYear = int.Parse(bookform.ItemCopyrightYear);
book.LoanPeriod = int.Parse(bookform.ItemLoanPeriod);
book.CallNumber = bookform.ItemCallNumber;
book.Author = bookform.BookAuthor;
}
}
}
private void bookToolStripMenuItem_Click(object sender, EventArgs e)
{
BookForm bookform = new BookForm(); // Bookform is created
DialogResult result; // Dialog result is created
result = bookform.ShowDialog();
if (result == DialogResult.OK)
{
string title = bookform.Title; // Title is set using the form property
string publisher = bookform.Publisher; // Publisher is set using the form property
int copyrightyear = int.Parse(bookform.CopyrightYear); // Copyrightyear is set using the form property
int loanperiod = int.Parse(bookform.LoanPeriod); // Loanperiod is set using the form property
string callnumber = bookform.CallNumber; // Callnumber is set using the form property
string author = bookform.Author; // Author is set using the form property
// A new library book is added to the library
newLibrary.AddLibraryBook(title, publisher, copyrightyear, loanperiod, callnumber, author);
}
}
private void BookToolStripMenuItem1_Click(object sender, EventArgs e)
{
List <LibraryItem> items; // List of library items
items = _lib.GetItemsList();
if ((items.Count() == 0))
{
MessageBox.Show("Must have a book to edit!");
}
else
{
BookSelectionForm bookSelectForm = new BookSelectionForm(items); // The return dialog box form
DialogResult result = bookSelectForm.ShowDialog(); // Show form as dialog and store result
if (result == DialogResult.OK)
{
LibraryBook b = (LibraryBook)_lib._items[bookSelectForm.ItemIndex];
BookForm bf = new BookForm();
bf.ItemTitle = b.Title;
bf.ItemPublisher = b.Publisher;
bf.ItemCopyrightYear = b.CopyrightYear.ToString();
bf.ItemLoanPeriod = b.LoanPeriod.ToString();
bf.ItemCallNumber = b.CallNumber;
bf.BookAuthor = b.Author;
DialogResult result1 = bf.ShowDialog();
if (result1 == DialogResult.OK)
{
b.Title = bf.ItemTitle;
b.Publisher = bf.ItemPublisher;
b.CopyrightYear = int.Parse(bf.ItemCopyrightYear);
b.LoanPeriod = int.Parse(bf.ItemLoanPeriod);
b.CallNumber = bf.ItemCallNumber;
b.Author = bf.BookAuthor;
}
}
bookSelectForm.Dispose();
}
}
// Precondition: Insert, Book menu item activated
// Postcondition: The Book dialog box is displayed. If data entered
// are OK, a LibraryBook is created and added to the library
private void bookToolStripMenuItem_Click(object sender, EventArgs e)
{
BookForm bookForm = new BookForm(); // The book dialog box form
DialogResult result = bookForm.ShowDialog(); // Show form as dialog and store result
if (result == DialogResult.OK) // Only add if OK
{
try
{
// Use form's properties to get book info to send to library
_lib.AddLibraryBook(bookForm.ItemTitle, bookForm.ItemPublisher, int.Parse(bookForm.ItemCopyrightYear),
int.Parse(bookForm.ItemLoanPeriod), bookForm.ItemCallNumber, bookForm.BookAuthor);
}
catch (FormatException) // This should never happen if form validation works!
{
MessageBox.Show("Problem with Book Validation!", "Validation Error");
}
}
bookForm.Dispose(); // Good .NET practice - will get garbage collected anyway
}
// Precondition: Book menuItem activated
// Postcondition: The book dialog box is displayed. If data entered
// are OK, a book is created and added to the list
// of books
private void bookToolStripMenuItem_Click(object sender, EventArgs e)
{
BookForm Book = new BookForm(); // The dialog box form, variable that interacts with book form
result = Book.ShowDialog();
string Title; // holds book's title
string Publisher; // holds book's author
int LoanPeriod; // holds loan period
int Copyright; // holds copyright year
string CallNumber; // holds call number
string Author; // holds author of the book
if (result == DialogResult.OK) // Only update if user chose OK from dialog box
{
Title = Book.TitleValue;
Publisher = Book.PublisherValue;
Copyright = int.Parse(Book.CopyrightValue); //Retrieve value from dialog box
LoanPeriod = int.Parse(Book.LoanPeriodValue); //Retrieve value from dialog box
CallNumber = Book.CallNumberValue;
Author = Book.AuthorValue;
_lib.AddLibraryBook(Title, Publisher, Copyright, LoanPeriod, CallNumber, Author);
}
}
// Precondition: None
// Postcondition: Opens a dialog box that will add a book to the library
private void bookToolStripMenuItem_Click(object sender, EventArgs e)
{
BookForm Book = new BookForm(); // variable that interacts with book form
result = Book.ShowDialog();
string Title; // the book's title
string Publisher; // the book's author
int LoanPeriod; // the loan period
int Copyright; // the copyright year
string CallNumber; // the call number in the library's system
string Author; // the writer of the book
if (result == DialogResult.OK)
{
Title = Book.titleTextbox.Text;
Publisher = Book.publisherTextbox.Text;
Copyright = int.Parse(Book.copyrightTextbox.Text);
LoanPeriod = int.Parse(Book.loanPeriodTextbox.Text);
CallNumber = Book.callNumberTextBox.Text;
Author = Book.authorTextbox.Text;
_lib.AddLibraryBook(Title, Publisher, Copyright, LoanPeriod, CallNumber, Author);
}
}
//Precondition: none
//Postcondition: Outputs the values of the selected book into the edit book form
private void bookButton_Click(object sender, EventArgs e)
{
LibraryBook b = _lib._patrons[BookIndex];
BookForm pf = new BookForm();
pf.BookAuthor = b.Author;
pf.ItemCopyrightYear = b.CopyrightYear;
pf.ItemCallNumber = b.CallNumber;
pf.ItemLoanPeriod = b.LoanPeriod;
pf.ItemPublisher = b.Publisher;
pf.ItemTitle = b.Title;
DialogResult result = pf.ShowDialog();
//Precondition: The result is valid
//Postcondition: Outputs the values of the selected book into the edit book form
if (result == DialogResult.OK)
{
b.Author = pf.BookAuthor;
b.CopyrightYear = pf.ItemCopyrightYear;
b.CallNumber = pf.ItemCallNumber;
b.LoanPeriod = pf.ItemLoanPeriod;
b.Publisher = pf.ItemPublisher;
b.Title = pf.ItemTitle;
}
}
private void BookToolStripMenuItem1_Click(object sender, EventArgs e)
{
List <LibraryItem> items; // List of items
items = _lib.GetItemsList();
if (items.Count() == 0) // Must have items
{
MessageBox.Show("Must have books to edit!", "Edit Patron Error");
}
else
{
SelectBookForm selectBookForm = new SelectBookForm(items); // The Select Book dialog box form load with items
DialogResult result = selectBookForm.ShowDialog(); // Show form as dialog and stores result
if (result == DialogResult.OK) // Only add if OK
{
try
{
BookForm bookForm = new BookForm(); // The patron dialog box form
LibraryBook selected = (LibraryBook)items[selectBookForm.BookIndex]; //carryovers the selected book's properties into the new form
bookForm.ItemTitle = selected.Title; // sets itemTitle property to one the user selected
bookForm.ItemPublisher = selected.Publisher; // sets ItemPublisherTxt property to one the user selected
bookForm.ItemCopyrightYear = selected.CopyrightYear.ToString(); // sets ItemCopyrightYearsTxt property to one the user selected
bookForm.ItemLoanPeriod = selected.LoanPeriod.ToString(); // sets LoanPeriodTxt property to one the user selected
bookForm.ItemCallNumber = selected.CallNumber; // sets ItemCallNumberTxt property to one user selected
bookForm.BookAuthor = selected.Author; // sets bookAuthorTxt property to one user selected
bookForm.ShowDialog(); // Show form as dialog and store result
if (result == DialogResult.OK) // Only add if OK
{
selected.Title = bookForm.ItemTitle; // sets Title to input
selected.Publisher = bookForm.ItemPublisher; // sets Publisher to input
selected.CopyrightYear = int.Parse(bookForm.ItemCopyrightYear); // sets CopyrightYears to input
selected.LoanPeriod = int.Parse(bookForm.ItemLoanPeriod); // sets Loan Period to input
selected.CallNumber = bookForm.ItemCallNumber; // sets Call Number to input
selected.Author = bookForm.BookAuthor; // sets Call Number to input
}
bookForm.Dispose(); // Good .NET practice - will get garbage collected anyway
}
catch (ArgumentOutOfRangeException)
{
MessageBox.Show("Enter Input into the Proper Field", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
catch (InvalidOperationException)
{
MessageBox.Show("Invalid Operation", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
catch (FormatException)
{
MessageBox.Show("Please Enter Correct Format", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
selectBookForm.Dispose(); // Good .NET practice - will get garbage collected anyway
}
}
private void bookToolStripMenuItem1_Click(object sender, EventArgs e)
{
List<LibraryItem> items = new List<LibraryItem>(); //list for all library items
List<LibraryItem> books = new List<LibraryItem>(); //list for library books
List<int> bookIndices; // List of index values of items checked out
items = lib.GetItemsList(); //get current list of library items
bookIndices = new List<int>(); //list for book indicies
for (int i = 0; i < items.Count(); i++) //loop to end of list
{
if (items[i] is LibraryBook) //if the item type is LibraryBook
{
books.Add(items[i]); //add book to list
bookIndices.Add(i); //add item index
}
}
BookEdit bookEditForm = new BookEdit(books); //form to choose the book to edit
DialogResult result = bookEditForm.ShowDialog(); //show form with selected book data
if (result == DialogResult.OK) //continue if OK
{
LibraryItem selectedItem = lib._items[bookIndices[bookEditForm.ItemIndex]]; //hold book selected to edit
LibraryBook selectedBook = selectedItem as LibraryBook; //cast item as library book
BookForm bform = new BookForm(); //new book form to load selected items to
bform.ItemTitle = selectedBook.Title; //add book title
bform.ItemPublisher = selectedBook.Publisher; //add publisher book
bform.ItemCopyrightYear = selectedBook.CopyrightYear.ToString(); //add sting of copyright year
bform.ItemLoanPeriod = selectedBook.LoanPeriod.ToString(); //add string of loan period
bform.ItemCallNumber = selectedBook.CallNumber; //add call number
bform.BookAuthor = selectedBook.Author; //add author
result = bform.ShowDialog(); //show form with the selected book's data
if (result == DialogResult.OK) //continue if OK
{
selectedBook.Title = bform.ItemTitle; //set new book title
selectedBook.Publisher = bform.ItemPublisher; //set new book publisher
selectedBook.CopyrightYear = int.Parse(bform.ItemCopyrightYear); //set new copyright year as int
selectedBook.LoanPeriod = int.Parse(bform.ItemLoanPeriod); //set new loan period as int
selectedBook.CallNumber = bform.ItemCallNumber; //set new call number
selectedBook.Author = bform.BookAuthor; //set new author
}
}
}
// Precondition: Insert, Book menu item activated
// Postcondition: The Book dialog box is displayed. If data entered
// are OK, a LibraryBook is created and added to the library
private void bookToolStripMenuItem_Click(object sender, EventArgs e)
{
BookForm bookForm = new BookForm(); // The book dialog box form
DialogResult result = bookForm.ShowDialog(); // Show form as dialog and store result
if (result == DialogResult.OK) // Only add if OK
{
try
{
// Use form's properties to get book info to send to library
lib.AddLibraryBook(bookForm.ItemTitle, bookForm.ItemPublisher, int.Parse(bookForm.ItemCopyrightYear),
int.Parse(bookForm.ItemLoanPeriod), bookForm.ItemCallNumber, bookForm.BookAuthor);
}
catch (FormatException) // This should never happen if form validation works!
{
MessageBox.Show("Problem with Book Validation!", "Validation Error");
}
}
bookForm.Dispose(); // Good .NET practice - will get garbage collected anyway
}
// Precondition: Edit, Book menu item activated
// Postcondition: The book selected from the library has been edited
// with the new information replacing the existing object's
// properties
private void bookToolStripMenuItem1_Click(object sender, EventArgs e)
{
List <LibraryItem> bookItems; // List of items that are books
List <LibraryItem> items; // List of library items
items = _lib.GetItemsList();
bookItems = new List <LibraryItem>();
for (int i = 0; i < items.Count(); ++i)
{
if (items[i] is LibraryBook) // Book?
{
bookItems.Add(items[i]);
}
}
if ((bookItems.Count() == 0)) // Must have books to edit
{
MessageBox.Show("Must have books to edit!", "Edit Error");
}
else
{
ReturnForm siForm = new ReturnForm(bookItems); // The select item dialog box form
// Just reused ReturnForm, they are identical
siForm.Text = "Edit Book"; // Change return form's title to match new purpose
DialogResult result = siForm.ShowDialog(); // Show form as dialog and store result
if (result == DialogResult.OK) // Only edit if OK
{
int selectedIndex; // Index of selected item
selectedIndex = siForm.ItemIndex;
if (selectedIndex >= 0) // -1 if didn't select item from combo box (should never happen!)
{
LibraryBook editBook = bookItems[selectedIndex] as LibraryBook; // Book being edited
//LibraryBook editBook = (LibraryBook)bookItems[selectedIndex]; // Book being edited
// Need downcast to get to Author
BookForm bookForm = new BookForm(); // The book dialog box form
// Populate form fields from selected book
bookForm.ItemTitle = editBook.Title;
bookForm.ItemPublisher = editBook.Publisher;
bookForm.ItemCallNumber = editBook.CallNumber;
bookForm.ItemCopyrightYear = editBook.CopyrightYear.ToString("D4"); // ToString since property is String on form
bookForm.ItemLoanPeriod = editBook.LoanPeriod.ToString(); // ToString since property is String on form
bookForm.BookAuthor = editBook.Author;
DialogResult editResult = bookForm.ShowDialog(); // Show form as dialog and store result
if (editResult == DialogResult.OK) // Only update book if OK
{
// Edit book properties using form fields
try
{
//Edits the item dictionary so that it isn't corrupted due to the keys changing
//_lib.ChangeItemKey(bookItems[selectedIndex].CallNumber, editBook.CallNumber, editBook);
editBook.Title = bookForm.ItemTitle;
editBook.Publisher = bookForm.ItemPublisher;
//editBook.CallNumber = bookForm.ItemCallNumber; //(Edited out to prevent corruption of
//dictionary
editBook.Author = bookForm.BookAuthor;
editBook.CopyrightYear = int.Parse(bookForm.ItemCopyrightYear);
editBook.LoanPeriod = int.Parse(bookForm.ItemLoanPeriod);
}
catch (FormatException) // This should never happen if form validation works!
{
MessageBox.Show("Problem with Book Validation!", "Validation Error");
}
}
bookForm.Dispose(); // Good .NET practice - will get garbage collected anyway
}
}
siForm.Dispose(); // Good .NET practice - will get garbage collected anyway
}
}
