linq我將如何訂購此聲明

Question

如您所見，我正在嘗試在語句末尾執行多個by by語句。 我的結果返回不正確。

var query = 
    (from x in workloadDetail
    group x by new { x.titleOrder, x.httitle } into sortedData                        
    select new WorkloadSummary()
    {
    httitle = sortedData.Key.httitle,
    totalHrs = sortedData.Sum(x => x.totalHrs),
    totalDol = sortedData.Sum(x => x.totalDol),
    titleOrder = sortedData.Key.titleOrder
    }).OrderBy(x => x.httitle).OrderByDescending(x => x.totalHrs);

Answer 1

如果要鏈接多個OrderBy()查詢，則需要使用ThenBy()和ThenByDescending()為其后續屬性按適當順序應用它們：

.OrderBy(x => x.httitle).ThenByDescending(x => x.totalHrs);

Answer 2

使用ThenByDescending方法以降序應用二級排序。

.OrderBy(x => x.httitle).ThenByDescending(x => x.totalHrs);