Question

以下代码是SQL Server 2014中的SQL select查询，我想在C＃中将其用作LINQ查询...请帮助我在LINQ中是新手。谢谢

USE [Proforecast]
GO

SELECT  TooltipsLanguage.Id, TooltipsLanguage.Language,
        TooltipsLanguageSection.Id, TooltipsLanguageSection.IdLanguage, TooltipsLanguageSection.IdSection,
        TooltipsSection.Id, TooltipsSection.Section, 
        TooltipsItem.Id, TooltipsItem.IdSection, TooltipsItem.ItemName,
        TooltipsItemText.Id, TooltipsItemText.IdItem, TooltipsItemText.IdText,
        TooltipsText.Id, TooltipsText.Texts
FROM    TooltipsLanguage
INNER JOIN      TooltipsLanguageSection ON TooltipsLanguageSection.IdLanguage = TooltipsLanguage.Id
INNER JOIN      TooltipsSection ON TooltipsSection.Id = TooltipsLanguageSection.IdSection
INNER JOIN      TooltipsItem ON TooltipsItem.IdSection = TooltipsSection.Id
INNER JOIN      TooltipsItemText ON TooltipsItemText.IdItem = TooltipsItem.Id
INNER JOIN      TooltipsText ON TooltipsText.Id = TooltipsItemText.IdText

GO

Answer 1

你是否尝试过这样的事情（为简洁起见省略了一些连接）：

var result = from s in TooltipsLanguage
                              join c in TooltipsLanguageSection on s.Id equals c.IdLanguage
                              join p in TooltipsSection on c.IdSection equals p.Id
                              join ...
                              select new MyDestinationObject()
                              {
                                  Id = s.BusinessEntityID,
                                  Language = s.Language,
                                  IdLanguage = c.IdLanguage,
                                  ...
                              };

Answer 2

这可能会帮助你。

var temp= edbContext.TooltipsLanguage.select(
c=> new {
TooltipsLanguage.Id,
TooltipsLanguage.Language,
TooltipsLanguage.TooltipsLanguageSection.Id,
TooltipsLanguage.TooltipsLanguageSection.IdLanguage,
TooltipsLanguage.TooltipsLanguageSection.IdSection,
TooltipsLanguage.TooltipsLanguageSection.TooltipsSection.Id,
TooltipsLanguage.TooltipsLanguageSection.TooltipsSection.Section, 
TooltipsLanguage.TooltipsLanguageSection.TooltipsSection.Section.TooltipsItem.Id,
TooltipsLanguage.TooltipsLanguageSection.TooltipsSection.Section.TooltipsItem.IdItem,
TooltipsLanguage.TooltipsLanguageSection.TooltipsSection.Section.TooltipsItem.TooltipsItemText.Id,
TooltipsLanguage.TooltipsLanguageSection.TooltipsSection.Section.TooltipsItem.TooltipsItemText.IdItem,
TooltipsLanguage.TooltipsLanguageSection.TooltipsSection.Section.TooltipsItem.TooltipsItemText.IdText,
TooltipsLanguage.TooltipsLanguageSection.TooltipsSection.Section.TooltipsItem.TooltipsItemText.TooltipsText.Id,
TooltipsLanguage.TooltipsLanguageSection.TooltipsSection.Section.TooltipsItem.TooltipsItemText.TooltipsText.Texts});

如何在C＃中将以下SQL查询写入Linq查询？

2 个答案: