//This method really shouldn't allow for duplicate call numbers
//although it isn't specified in the directions. I want to make a
//list of books local to this event, and have an if statement and
//a for each loop go through each book currently in the library,
//and check for duplicate call numbers, but I'm out of time I guess
//I'll have to take a hit on this.
private void btnAdd_Click(object sender, EventArgs e)
{
int pageHolder = 0;
int callholder = 0;
//Two local variables used in error checking to make sure both the
//page number and call number are indeed numbers
try
{
if (string.IsNullOrWhiteSpace(txtAuthorAdd.Text) || string.IsNullOrWhiteSpace(txtCallAdd.Text)
|| string.IsNullOrWhiteSpace(txtGenreAdd.Text) || string.IsNullOrWhiteSpace(txtPagesAdd.Text)
|| string.IsNullOrWhiteSpace(txtPubAdd.Text) || string.IsNullOrWhiteSpace(txtTitleAdd.Text))
//This is a really rough way of making sure all the textboxes
//have something in them
{
MessageBox.Show("Please fill out all fields");
//if not, throw up a message box.
}
else if ((!int.TryParse(txtPagesAdd.Text, out pageHolder)) ||
(!int.TryParse(txtCallAdd.Text, out callholder)))
//This then checks to see if the number of pages and
//call number are indeed numbers
{
MessageBox.Show("Number of Pages and call number must be a number");
//Otherwise, throw up a message box telling the user the error
}
else
{
//If all this checks out, add the book to the library
Book newbook = new Book(txtCallAdd.Text, txtTitleAdd.Text, txtAuthorAdd.Text,
txtGenreAdd.Text, int.Parse(txtPagesAdd.Text), txtPubAdd.Text);
//Create a new book based on the information given in the text
//boxes
myLibrary.mybooks.Add(newbook);
//Add the newly created book to our library
//Display "book added" message box
MessageBox.Show("Book Added to Library!");
//Clear fields
txtAuthorAdd.Clear();
txtCallAdd.Clear();
txtGenreAdd.Clear();
txtPagesAdd.Clear();
txtPubAdd.Clear();
txtTitleAdd.Clear();
txtAuthorAdd.Focus();
//set the focus on the first text box
PopulateBooks();
//Run the method that updates the lbox on the second
//tab so information is updated in real time
}
}
catch
{
MessageBox.Show("An error occurred, please try again.");
//Just in case a non-specified error occurs
}
}
private void btnAdd_Click(object sender, EventArgs e)
{
if (myLibrary.CallNumberExists(txtCallAdd.Text) == true)
//This calls the CallNumberExists method from the Library class
//which returns a bool
//and checks it with the data entered in the call number txtbox.
{
MessageBox.Show("That call number already exists.");
txtCallAdd.Focus();
//If the call number exists already, then bring up a message box
//and let the user know what's up as well as put the focus on that
//text box
}
else
{
//If that checks out, move on to the rest of the program.
int pageHolder = 0;
int callholder = 0;
double sizeholder = 0;
//Two local variables used in error checking to make sure both the
//page number and call number are indeed numbers
try
{
if (string.IsNullOrWhiteSpace(txtAuthorAdd.Text) || string.IsNullOrWhiteSpace(txtCallAdd.Text)
|| string.IsNullOrWhiteSpace(txtGenreAdd.Text) || string.IsNullOrWhiteSpace(txtPagesAdd.Text)
|| string.IsNullOrWhiteSpace(txtPubAdd.Text) || string.IsNullOrWhiteSpace(txtTitleAdd.Text))
//This is a really rough way of making sure all the textboxes
//have something in them
//Now that I think about it, if i had an array of textboxes this wouldn't
//be necessary
{
MessageBox.Show("Please fill out all fields");
//if not, throw up a message box.
}
else if ((!int.TryParse(txtPagesAdd.Text, out pageHolder)) ||
(!int.TryParse(txtCallAdd.Text, out callholder)))
//This then checks to see if the number of pages and
//call number are indeed numbers
{
MessageBox.Show("Number of Pages and call number must be a number");
//Otherwise, throw up a message box telling the user the error
}
else if (pageHolder >= 9000)
{
MessageBox.Show("Over 9000? Your scouter must be broken!");
txtPagesAdd.Focus();
//If the user tries to say that the book has more than 9000 pages
//tell him to check again.
}
else
{
if (chkEbookAdd.Checked == false)
{
//If all this checks out, add the book to the library
Book newbook = new Book(txtCallAdd.Text, txtTitleAdd.Text, txtAuthorAdd.Text,
txtGenreAdd.Text, int.Parse(txtPagesAdd.Text), txtPubAdd.Text);
//Create a new book based on the information given in the text
//boxes
myLibrary.mybooks.Add(newbook);
//myLibrary.mybooks.Add(newbook);
//Add the newly created book to our library
//Display "book added" message box
MessageBox.Show("Book Added to Library!");
//Clear fields
txtAuthorAdd.Clear();
txtCallAdd.Clear();
txtGenreAdd.Clear();
txtPagesAdd.Clear();
txtPubAdd.Clear();
txtTitleAdd.Clear();
txtEbookAdd.Clear();
chkEbookAdd.Checked = false;
txtAuthorAdd.Focus();
//set the focus on the first text box
PopulateBooks();
//Run the method that updates the lbox on the second
//tab so information is updated in real time
}
if (chkEbookAdd.Checked == true)
//if the user checks the ebook checkbox, then run some
//input value as it relates to ebooks.
{
if (!double.TryParse(txtEbookAdd.Text, out sizeholder))
//If the user tries to enter something that isn't a number
{
MessageBox.Show("File size must be a number...");
txtEbookAdd.Focus();
//Show a message box and then put the focus on that text box
}
else if ((sizeholder <= 0) || (sizeholder >= 10000))
//if the user enters a value at 0 or below, or above 10,000MB
{
MessageBox.Show("The file size must be greater than 0 and less than 10GB");
txtEbookAdd.Focus();
//Show a messagebox and put the focus on that text box.
}
else if (string.IsNullOrWhiteSpace(txtEbookAdd.Text))
//if the user enters nothing in the text box
{
MessageBox.Show("You must enter a non zero value for file size.");
txtEbookAdd.Focus();
//Show a messagebox and put the focus on that text box.
}
else
{
Book newbook = new eBook(txtCallAdd.Text, txtTitleAdd.Text, txtAuthorAdd.Text,
txtGenreAdd.Text, int.Parse(txtPagesAdd.Text), txtPubAdd.Text, double.Parse(txtEbookAdd.Text));
myLibrary.mybooks.Add(newbook);
//This adds a new ebook of type book (because ebook is a child
//class of Book and that's what inheritance is all about) and
//instantiates it with all of the properties of Book with the
//addition of the property for ebook.
//Display "book added" message box
MessageBox.Show("Book Added to Library!");
//Clear fields
txtAuthorAdd.Clear();
txtCallAdd.Clear();
txtGenreAdd.Clear();
txtPagesAdd.Clear();
txtPubAdd.Clear();
txtTitleAdd.Clear();
txtEbookAdd.Clear();
chkEbookAdd.Checked = false;
//uncheck the check box
txtAuthorAdd.Focus();
//set the focus on the first text box
PopulateBooks();
//Run the method that updates the lbox on the second
//tab so information is updated in real time
}
}
}
}
catch
{
MessageBox.Show("An error occurred, please try again.");
//Just in case a non-specified error occurs
}
}
}