我想计算每个id的分数总和。我的意思是,在我的例子中,身份证号码100的最终得分是:10 + 10.5 + .... 你建议我做什么?我的第一阶段的想法是创建一个列表和存储ID,列表名称,值和分数(如上表),但我不知道如何做第2阶段。 如果你能帮助我,我将不胜感激。 非常感谢 代码块添加 - OriginalGriff [/ edit] 解决方案 如果你创建一个列表,那么你就在那里。我要做的是进一步前进,创建一个类来保存值,然后构建一个类实例列表: public class UserScore { public int ID { get ; set ; } public int Number { get ; set ; } public int 值{ get ; set ; } public double 得分{ get ; set ; } public UserScore( int id, int number, int value , double 得分) { ID = id; 数量=数字; Value = value ; 得分=得分; } } 然后你可以构建一个类的List并填充它: List< userscore> list = new 列表< userscore>(); list.Add( new UserScore( 100 , 1 , 2 , 10 )); list.Add( new UserScore( 300 , 1 , 2 , 9 )); list.Add( new UserScore( 200 , 1 , 4 , 11 )); list.Add( new UserScore( 100 , 2 , 3 , 10 。 5 )); list.Add( new UserScore( 200 , 2 , 4 , 10 )); 你可以然后使用Linq对结果进行分组: var totals = 来自 uc 列表 group uc by uc.ID into g 选择 new {ID = g.Key,TotalScore = g.Sum(x = > x.Score)}; 删除了伪造的XML [/ edit] 如果你使用sql然后使用SUM()和group by子句 HelloI'm creating a web site in asp.net with C# language.I have 9 lists. Each lists have 2 columns : ID with int type, and Value with int16 type. ID is unique. I want to calculate score of each ID in each list with a special formula. For instance, you think this is the result after calculating all scores:id list number value score100 1 2 10300 1 2 9200 1 4 11100 2 3 10.5200 2 3 10... I want to calculate sum of the scores of each id. I mean, the final score of id number 100 in my example is: 10+10.5+....What do you suggest for me to do this? My idea for first stage is to create a list and store id, list name, value, and score in it(like the above table), but I don't know how to do stage 2.I would be grateful if you kindly help me. Thanks a lot[edit]Code block added - OriginalGriff[/edit] 解决方案 If you create a list then you are half way there. What I would do is go one stage further, and create a class to hold the values, and then build a list of the class instances:public class UserScore { public int ID { get; set; } public int Number { get; set; } public int Value { get; set; } public double Score { get; set; } public UserScore(int id, int number, int value, double score) { ID = id; Number = number; Value = value; Score = score; } }You can then construct a List of the class and fill it:List<userscore> list = new List<userscore>();list.Add(new UserScore(100, 1, 2, 10));list.Add(new UserScore(300, 1, 2, 9));list.Add(new UserScore(200, 1, 4, 11));list.Add(new UserScore(100, 2, 3, 10.5));list.Add(new UserScore(200, 2, 4, 10));You can then use Linq to group the results:var totals = from uc in list group uc by uc.ID into g select new { ID = g.Key, TotalScore = g.Sum(x => x.Score) };[edit]Spurious XML removed[/edit]if you are using sql then use SUM() with group by clause. 这篇关于计算类似id的分数之和的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持! 阿里云证书,YYDS!
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