public void StopShooting() { foreach (var item in allScore) { //计算总成绩 float totalScore = 0; //计算脱靶数 int missNum = 0; //计算击中数 int hitNum = 0; //计算开枪数 int guns; //计算平均成绩 float averageScore; string grading; for (int i = 0; i < item.Value.Count; i++) { totalScore += item.Value[i].hitNum; if (item.Value[i].hitFlag==0)//0是未击中 1是击中 missNum += 1; else hitNum += 1; } guns = item.Value.Count; averageScore = totalScore / guns; grading = GetGrading(averageScore); //每个人射击总的数据 Score score = new Score() { id = item.Key.ToString(), createTime = item.Value[0].startTime, totalScore = totalScore.ToString(), hitNum = hitNum.ToString(), missNum = missNum.ToString(), grading = grading, guns = guns.ToString(), turnType = item.Value[0].shootingMode.ToString(), turnTheme = item.Value[0].baJiType, playerName = PersonDao.Instance.FindNameByID(item.Key.ToString()).namee, workPlace = item.Value[0].workPlace }; //将数据添加到数据库中 ScoreInfoSqlMgr.Instance.Add(score); } //停止射击 要把存的所有的成绩给清空一下 allScore.Clear(); //存的顺序的也要清空一下 dicScore.Clear(); //不接受射击成绩的消息了 isRecive = false; }这段代码如何优化

这段代码的优化可以从以下几个方面入手：

1. 使用 LINQ 语句来优化 foreach 循环
2. 使用 try catch 块来处理插入数据库时的异常情况
3. 将重复的代码封装成方法来优化代码的复用性

经过优化后的代码如下所示：

public void StopShooting()
{
    // 使用 LINQ 语句计算总成绩、脱靶数、击中数、平均成绩、分数等信息
    var scoreList = allScore.Select(item => new Score
    {
        id = item.Key.ToString(),
        createTime = item.Value[0].startTime,
        totalScore = item.Value.Sum(x => x.hitNum).ToString(),
        hitNum = item.Value.Count(x => x.hitFlag == 1).ToString(),
        missNum = item.Value.Count(x => x.hitFlag == 0).ToString(),
        guns = item.Value.Count.ToString(),
        turnType = item.Value[0].shootingMode.ToString(),
        turnTheme = item.Value[0].baJiType,
        playerName = PersonDao.Instance.FindNameByID(item.Key.ToString()).namee,
        workPlace = item.Value[0].workPlace,
        grading = GetGrading(item.Value.Average(x => x.hitNum))
    }).ToList();

    // 将数据添加到数据库中，并处理异常情况
    try
    {
        ScoreInfoSqlMgr.Instance.Add(scoreList);
    }
    catch (Exception ex)
    {
        Console.WriteLine("插入数据库失败：" + ex.Message);
    }

    // 停止射击，清空所有成绩，存储顺序，不再接受射击成绩
    allScore.Clear();
    dicScore.Clear();
    isRecive = false;
}

// 获取射击分数等级
public string GetGrading(double score)
{
    if (score >= 90)
        return "优秀";
    else if (score >= 80)
        return "良好";
    else if (score >= 60)
        return "及格";
    else
        return "不及格";
}

// 定义成绩类
public class Score
{
    public string id { get; set; }
    public DateTime createTime { get; set; }
    public string totalScore { get; set; }
    public string hitNum { get; set; }
    public string missNum { get; set; }
    public string grading { get; set; }
    public string guns { get; set; }
    public string turnType { get; set; }
    public string turnTheme { get; set; }
    public string playerName { get; set; }
    public string workPlace { get; set; }
}