private void BShow_Click(object sender, EventArgs e) { manage = new TBook(); bookList.Items.Clear(); int typeSort = -1; if (radioName.Checked) { typeSort = 0; } else if (radioYear.Checked) { typeSort = 1; } else if (radioAuthor.Checked) { typeSort = 2; } List <string> books = manage.getBooks(typeSort); foreach (var book in books) { bookList.Items.Add(book); } }
private void BAdd_Click(object sender, EventArgs e) { manage = new TBook(); if (isEmpty()) { Title = bookName.Text; Author = bookAuthor.Text; Year = int.Parse(bookYear.Text); if (!manage.isContains(Title)) { manage.addBooks(Title, Author, Year); bookName.Text = string.Empty; bookAuthor.Text = string.Empty; bookYear.Text = string.Empty; } else { MessageBox.Show("Данная книга уже есть в базе данных!"); return; } } else { MessageBox.Show("Одно из поле не заполнено!"); return; } }