// The id parameter name should match the DataKeyNames value set on the control
public void GridViewCategories_DeleteItem(int id)
{
BookLibraryEntities db = new BookLibraryEntities();
Book book = db.Books.FirstOrDefault(c => c.Id == id);
try
{
db.Books.Remove(book);
db.SaveChanges();
this.GridViewBooks.PageIndex = 0;
ErrorSuccessNotifier.AddInfoMessage("Book successfully deleted!");
}
catch(Exception ex)
{
ErrorSuccessNotifier.AddErrorMessage(ex);
}
}
protected void LinkButtonCreateOrEdit_Click(object sender, EventArgs e)
{
Book book;
int bookId= 0;
BookLibraryEntities db = new BookLibraryEntities();
if (!String.IsNullOrEmpty(this.LabelBookId.Text))
{
bookId = Convert.ToInt32(this.LabelBookId.Text);
book = db.Books.FirstOrDefault(c => c.Id == bookId);
}
else
{
book = new Book();
db.Books.Add(book);
}
try
{
if(String.IsNullOrEmpty(this.TextBoxTitle.Text))
{
throw new ArgumentException("Title must be filled!");
}
if (String.IsNullOrEmpty(this.TextBoxAuthors.Text))
{
throw new ArgumentException("Author must be filled!");
}
book.Title = this.TextBoxTitle.Text;
book.Author = this.TextBoxAuthors.Text;
book.ISBN = this.TextBoxISBN.Text;
book.Website = this.TextBoxWebsite.Text;
book.Description = this.TextBoxDescription.Text;
book.CategoryId = Convert.ToInt32(this.DropDownListCategories.SelectedItem.Value);
db.SaveChanges();
ErrorSuccessNotifier.AddInfoMessage("Book successfully " + (bookId == 0 ? "created!" : "edited!"));
ErrorSuccessNotifier.ShowAfterRedirect = true;
Response.Redirect("EditBooks.aspx", false);
}
catch (Exception ex)
{
ErrorSuccessNotifier.AddErrorMessage(ex);
}
}
protected void LinkButtonCreateOrEdit_Click(object sender, EventArgs e)
{
Category category;
int categoryId = 0;
BookLibraryEntities db = new BookLibraryEntities();
if(!String.IsNullOrEmpty(this.LabelCategoryId.Text))
{
categoryId = Convert.ToInt32(this.LabelCategoryId.Text);
category = db.Categories.FirstOrDefault(c => c.Id == categoryId);
}
else
{
category = new Category();
db.Categories.Add(category);
}
string categoryName = this.TextBoxCreateOrEdit.Text;
try
{
if(String.IsNullOrEmpty(categoryName))
{
throw new ArgumentException("Category name is required!");
}
category.Name = categoryName;
db.SaveChanges();
ErrorSuccessNotifier.AddInfoMessage("Category " + (categoryId == 0 ? "created!" : "edited!"));
ErrorSuccessNotifier.ShowAfterRedirect = true;
Response.Redirect("EditCategories.aspx", false);
}
catch(Exception ex)
{
ErrorSuccessNotifier.AddErrorMessage(ex);
}
}