C# 根据天、周、月汇总统计生成统计报表
2021-03-19 08:23
阅读：395
public static class DynamicQueryable
{ public static IQueryable> GroupBy
(IQueryable query, Expression> keySelector)
{
return query.GroupBy(keySelector);
}
public static ObservableCollection
{
return new ObservableCollection
}
}
public static class DateTimeExtension
{
public static int GetWeekOfYear(this DateTime dt)
{
GregorianCalendar calendar = new GregorianCalendar();
return calendar.GetWeekOfYear(dt, CalendarWeekRule.FirstDay, DayOfWeek.Monday);//注意这里一周是以星期一为第一天
}
}
前端图表显示使用插件：echarts 官网为：https://www.echartsjs.com/zh/index.html
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