private void Delete()
{
if (selectedManga != null)
{
DataBase.SqlConnection.Open();
SqlCommand cmd = new SqlCommand();
cmd.CommandText = $"delete from Manga where Manga_id =" + selectedManga.ID;
cmd.Connection = DataBase.SqlConnection;
cmd.ExecuteNonQuery();
Manga.Remove(selectedManga);
}
else
{
MessageBox.Show("Выберите мангу");
}
}