不确定如何说出这个问题,但无论如何我都会尝试。
我目前正在开展一个项目,我希望通过该项目提取用户的高分。我的数据库中的高分ID,看起来像这样:
The user database:
|ID | Username |
| 1 | Test1 |
| 2 | Test2 |
| 3 | Test3 |
The highscore database:
|ID |Highscore |HighscoreID|
| 1 | 200 | 1 |
| 1 | 230 | 2 |
| 1 | 240 | 3 |
首先,我想检查用户的ID是否与高分数据库中的ID匹配(HighscoreID),这样当显示所有高分时,Test1(谁的ID为1)将显示在高分数的前面哪个ID与HighscoreID中的id对应。有点像;
If(Username.ID == 1 && Highscore.HighscoreID == 1)
{
//Display The username + the score associated with that username
}
我不确定如何解释这一点,但是当我们想要通过网站上的ID显示某些内容时,我们会在地址链接中显示ID,然后从地址链接中取出所有ID
我希望这个解释得很好,很快就会在游戏中达到最后期限,所以我希望我不必重写这个问题。
先谢谢你,你们摇滚。
编辑
基本上这个:
MathAndYouDBEntities db = new MathAndYouDBEntities();
User users = new User();
HighScore highscor = new HighScore();
int idCounter = 0;
for (int i = 1; i < 5; i++)
{
i = idCounter;
if (users.ID == i && highscor.HighscoreID == i)
{
}
}
如果我想循环遍历所有这些,以便我以后可以显示它们?
d
oing this basicly crashes the program:
MathAndYouDBEntities db = new MathAndYouDBEntities();
User users = new User();
HighScore highscor = new HighScore();
int idCounter = 0;
for (int i = 1; i < 5; i++)
{
i = idCounter;
if (users.ID == idCounter && highscor.HighscoreID == idCounter)
{
allUsers += users.Bruger.ToString();
highscores += highscor.UserHighscore.ToString() + '\n';
}
}
message = allUsers + " " + highscores;
有什么想法吗?
答案 0 :(得分:1)
If(Username.ID == 1 && Highscore.HighscoreID == 1)
{
System.out.println("Username is: " Username.name + "And the high score is :" + Highscore.Highscore);
//Display The username + the score associated with that username
}
因为如果您使用正确的高分来检查正确的用户名ID,您可以使用相同的高分来获得高分数。
我希望我有意义!
编辑:对不起,我没有在for循环中读到你想要它
for(Highscore h : HighscoreList) //ifyourusinganarraylistnamedHighscoreList
If(Username.ID == 1 && Highscore.HighscoreID == 1)
{
System.out.println("Username is: " Username.name + "And the high score is :" + Highscore.Highscore);
}
答案 1 :(得分:1)
如果你使用某种ORM,你可以这样做。
var highScore = Highscores.Where(c => c.HighscoreID == 1)
.Max(c => c.Highscore);
或者在查询字符串中执行此操作。
答案 2 :(得分:0)
经过大量测试后找到答案。
MathAndYouDBEntities db = new MathAndYouDBEntities();
var queryResults =
(
from u in db.Users
join h in db.HighScores
on u.ID equals h.HighscoreID
select new { u.Bruger, h.UserHighscore }
);
foreach (var h in queryResults)
{
allUsers += h.Bruger.ToString();
highscores += h.UserHighscore.ToString();
}
感谢大家的帮助。