c# – 使用linq获取分组的逗号分隔值
发布时间:2020-12-15 08:23:56 所属栏目:百科 来源:网络整理
导读:我想第三列“项目”与分组的值. Dictionarystring,int dic = new Dictionarystring,int();dic.Add("a",1);dic.Add("b",1);dic.Add("c",2);dic.Add("d",3);var dCounts = (from i in dic group i by i.Value into g select new { g.Key,count = g.Count()});
我想第三列“项目”与分组的值.
Dictionary<string,int> dic = new Dictionary<string,int>(); dic.Add("a",1); dic.Add("b",1); dic.Add("c",2); dic.Add("d",3); var dCounts = (from i in dic group i by i.Value into g select new { g.Key,count = g.Count()}); var a = dCounts.Where(c => c.count>1 ); dCounts.Dump(); a.Dump(); 此代码导致: Key Count 1 2 2 1 3 1 我想要这些结果: Key Count Items 1 2 a,b 2 1 c 3 1 d 解决方法var dCounts = (from i in dic group i by i.Value into g select new { g.Key,count = g.Count(),Items = string.Join(",",g.Select(kvp => kvp.Key)) }); 使用string.Join(“,”,{array}),传入您的数组键. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |