带有动态列的 LINQ Pivot [英] LINQ Pivot with dynamic columns

问题描述

I'm trying to create a Pivot using LINQ with dynamic columns. I have created a Pivot in SQL Server where you do not know which columns are going to get used. But don't know how to transfer that into LINQ. Does anyone have links for me to get started on?

Cheers

解决方案

    List<CustData> myList = GetCustData();

    var query = myList
        .GroupBy(c => c.CustId)
        .Select(g => new {
            CustId = g.Key,
            Jan = g.Where(c => c.OrderDate.Month == 1).Sum(c => c.Qty),
            Feb = g.Where(c => c.OrderDate.Month == 2).Sum(c => c.Qty),
            March = g.Where(c => c.OrderDate.Month == 3).Sum(c => c.Qty)
        });

this is the answer from David B in this url

这篇关于带有动态列的 LINQ Pivot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IT屋！