我試圖將一些VB代碼到C＃。下面的VB.Net代碼正在工作。 GroupCategories是分組類別，這簡直是得到一些數據，並將其存儲在一個列表的列表。 For Each Groups In From g In GroupCategories Group By GroupInfo = New With {g.Id, g.Name} Into SubCategories = Group Selec
我想從以下（簡化）查詢減少SQL服務器的呼叫： var timequery = from t in TimeRecords
select t;
var reducedResults = timequery.Select(delegate(TimeRecord t){
ExpandoObject result = new ExpandoObject();
I
如何將我的SQL轉換爲LINQ？ DECLARE @cookie nvarchar(50)
SET @cookie = '[email protected]'
SELECT s.firstname
FROM [examManager].[dbo].[students] AS s
JOIN [examManager].[dbo].tutors t ON s.last_exam IN (t
如何檢查對於使用Linq to sql創建的組中的任何項目是否爲conditaion？ 假設我們有3個表：Invoice,Order和OrderItem。 我想知道發票上所有訂單的總數，以及發票上訂單的訂單項是否有折扣。 from o in db.Orders
group o by new
{
InvoiceId = o.InvoiceId,
LocationId = o.
上我有以下查詢： var articleGroups = from article in _Context.ArticleVersions
group article by article.ArticleID into articleGroup
select new
{
ArticleID = articleGroup.Ke
在下面的代碼： var finalArticles =
from domainArticle in articlesFoundInDomain
join articleCategoryVersion in dbc.ArticlesCategoriesVersions
on domainArticle.ArticleID equals articleCateg