如何从数据库中随机显示 10 个问题?我如何检查数据库的答案是否正确?
db.command(true, "SELECT * FROM question WHERE Age_group='" +category + "'");
foreach (DataRow item in db.result.Rows)
{
question_list.Add (Convert.ToInt32(item["id"]));
}
for (int i = 0; i < max_question; i++)
{
int index = ran.Next(question_list.Count);
question_choose.Add(question_list[index]);
question_list.Remove(question_list[index]);
}