public void ReturnBook(int checkoutId)
{
Checkout targetCheckout = Checkout.Find(checkoutId);
Book targetBook = Book.Find(targetCheckout.bookId);
SqlConnection conn = DB.Connection();
conn.Open();
SqlCommand cmd = new SqlCommand("UPDATE checkouts SET returned = 1 WHERE id = @checkoutId; UPDATE books SET checked_in = @checkedIn, checked_out = @checkedOut WHERE id = @bookId;", conn);
cmd.Parameters.AddWithValue("@checkoutId", targetCheckout.id);
cmd.Parameters.AddWithValue("@bookId", targetCheckout.bookId);
cmd.Parameters.AddWithValue("@checkedIn", targetBook.checkedIn + 1);
cmd.Parameters.AddWithValue("@checkedOut", targetBook.checkedOut - 1);
cmd.ExecuteNonQuery();
if (conn != null)
{
conn.Close();
}
}
public static Checkout Find(int id)
{
SqlConnection conn = DB.Connection();
conn.Open();
SqlCommand cmd = new SqlCommand("SELECT * FROM checkouts WHERE id = @checkoutId;", conn);
cmd.Parameters.AddWithValue("@checkoutId", id);
SqlDataReader rdr = cmd.ExecuteReader();
int idNew = 0;
int bookIdNew = 0;
int memberIdNew = 0;
DateTime dueDateNew = DateTime.Today;
bool returnedNew = false;
while (rdr.Read())
{
idNew = rdr.GetInt32(0);
bookIdNew = rdr.GetInt32(1);
memberIdNew = rdr.GetInt32(2);
dueDateNew = rdr.GetDateTime(3);
returnedNew = rdr.GetBoolean(4);
}
Checkout foundCheckout = new Checkout(bookIdNew, memberIdNew, dueDateNew, returnedNew, idNew);
if (rdr != null)
{
rdr.Close();
}
if (conn != null)
{
conn.Close();
}
return(foundCheckout);
}