C# linq groupby sum
2020-12-18 00:33
阅读：574
标签：group class new sum div key span rds records C# linq groupby sum 标签：group class new sum div key span rds records 原文地址：https://www.cnblogs.com/dayang12525/p/13973319.html
var records = studyRecords.GroupBy(x => x.StudyTime.Date).Select(y => new
{
date = y.Key,
seconds = y.Sum(x => x.StudySeconds)
});
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