private void SearchForBooksButton(object sender, EventArgs e) //Search for Books
{
string ISBNCode;
BooksSearcher bs = new ManageBooks();
if (bs.SearchForBookID(out ISBNCode) == DialogResult.OK)
{
textBox3.Text = ISBNCode;
}
}
bool ValidateValues(out String err)
{
err = "";
if (String.IsNullOrEmpty(TitleTextBox.Text) || TitleTextBox.Text.Length > 255)
{
err = "Enter Valid Title";
return(false);
}
if (String.IsNullOrEmpty(AuthorTextBox.Text) || AuthorTextBox.Text.Length > 50)
{
err = "Enter Valid Author";
return(false);
}
if (String.IsNullOrEmpty(PublisherTextBox.Text) || PublisherTextBox.Text.Length > 50)
{
err = "Enter Valid Publisher";
return(false);
}
// ISBN has a specific string size
if (String.IsNullOrEmpty(ISBNTextBox.Text) || !ManageBooks.IsValidISBN(ISBNTextBox.Text))
{
err = "Enter Valid ISBN (Exactly 10/13 Digits)";
return(false);
}
if (String.IsNullOrEmpty(LanguageTextBox.Text) || LanguageTextBox.Text.Length > 13)
{
err = "Enter Valid Language";
return(false);
}
if (String.IsNullOrEmpty(GenreTextBox.Text) || GenreTextBox.Text.Length > 20)
{
err = "Enter Valid Genre";
return(false);
}
// No Negative Prices
Double price;
if (!Double.TryParse(BookCostTextBox.Text, out price) || price < 0)
{
err = "Enter Valid Price (Greater than or equal to 0)";
return(false);
}
return(true);
}
private void ManageBooksButton_Click(object sender, EventArgs e)
{
// Instantiate a new Window
ManageBooks manageBooksForm = new ManageBooks();
manageBooksForm.IsLibrarian = true;
// When the Manage Books form closes, Bring the Main window Back
manageBooksForm.FormClosed += SubMenuForm_FormClosed;
// Hide this form and Show the Manage Books Form
this.Hide();
manageBooksForm.Show();
}