protected void Edit_Click(object sender, EventArgs e)
{
GridViewRow row = ((Button)sender).Parent.Parent as GridViewRow;
var bookId = int.Parse(BooksGrid.DataKeys[row.RowIndex].Value.ToString());
LibrarySystemDbContext data = new LibrarySystemDbContext();
var book = data.Books.FirstOrDefault(x => x.Id == bookId);
BookEdit.DataSource = new List <Book> {
book
};
BookEdit.DataBind();
(BookEdit.FindControl("BookCategory") as DropDownList).SelectedValue = book.CategoryId.ToString();
}
protected void SaveEdit_Click(object sender, EventArgs e)
{
var title = (BookEdit.FindControl("BookTitle") as TextBox).Text;
var authors = (BookEdit.FindControl("BookAuthors") as TextBox).Text;
var ISBN = (BookEdit.FindControl("BookIsbn") as TextBox).Text;
var site = (BookEdit.FindControl("BookSite") as TextBox).Text;
var description = (BookEdit.FindControl("BookDescription") as TextBox).Text;
var categoryId = int.Parse((BookEdit.FindControl("BookCategory") as DropDownList).SelectedValue);
if (string.IsNullOrEmpty(title))
{
Error_Handler_Control.ErrorSuccessNotifier.AddErrorMessage("Title cannot be empty");
return;
}
else if (title.Length < 5 || title.Length > 50)
{
Error_Handler_Control.ErrorSuccessNotifier.AddErrorMessage("Title must be between 5 and 50 symbols");
return;
}
else if (string.IsNullOrEmpty(authors))
{
Error_Handler_Control.ErrorSuccessNotifier.AddErrorMessage("Authors cannot be empty");
return;
}
else if (authors.Length < 5 || authors.Length > 50)
{
Error_Handler_Control.ErrorSuccessNotifier.AddErrorMessage("Authors must be between 5 and 50 symbols");
return;
}
else if (ISBN.Length > 50)
{
Error_Handler_Control.ErrorSuccessNotifier.AddErrorMessage("ISBN must be less than 50 symbols");
return;
}
else if (site.Length > 50)
{
Error_Handler_Control.ErrorSuccessNotifier.AddErrorMessage("ISBN must be less than 50 symbols");
return;
}
else if (description.Length > 2000)
{
Error_Handler_Control.ErrorSuccessNotifier.AddErrorMessage("Description must be less than 2000 symbols");
return;
}
else if (categoryId == -1 || categoryId == null)
{
Error_Handler_Control.ErrorSuccessNotifier.AddErrorMessage("Authors cannot be empty");
return;
}
var id = int.Parse(BookEdit.DataKey.Value.ToString());
LibrarySystemDbContext data = new LibrarySystemDbContext();
var book = data.Books.FirstOrDefault(x => x.Id == id);
book.Title = title;
book.Authors = authors;
book.ISBN = ISBN;
book.WebSite = site;
book.Description = description;
book.CategoryId = categoryId;
data.SaveChanges();
BookEdit.DataSource = null;
BookEdit.DataBind();
BooksGrid.DataBind();
}