C# 我怎样才能写这句话;其中;以下LINQ to SQL查询中的子句?
我正在处理以下LINQ查询:C# 我怎样才能写这句话;其中;以下LINQ to SQL查询中的子句?,c#,linq,linq-to-sql,C#,Linq,Linq To Sql,我正在处理以下LINQ查询: public void GetAuditRuleAgencyRecords(IEnumerable<Entities.AuditRule> rules) { using (LinqModelDataContext db = new LinqModelDataContext()) { var auditAgencyRecords = (from ag in db.Agencies
public void GetAuditRuleAgencyRecords(IEnumerable<Entities.AuditRule> rules)
{
using (LinqModelDataContext db = new LinqModelDataContext())
{
var auditAgencyRecords = (from ag in db.Agencies
join ara in db.AuditRuleAccounts on ag.Agency_Id equals ara.AgencyID
join arr in db.AuditRuleResults on ara.AuditRuleAccountID equals arr.AuditRuleAccountID
join are in db.AuditRuleEnterprises on arr.AuditRuleEnterpriseID equals are.AuditRuleEnterpriseID
select new
{
AgencyID = ag.Agency_Id,
AgencyName = ag.Agency_Name,
AuditRuleEnterpriseID = arr.AuditRuleEnterpriseID,
CorrectedDate = arr.CorrectedDate,
NbrDaysToCorrect = arr.NbrDaysToCorrect,
}).ToList();
}
}
public void GetAuditRuleAgencyRecords(IEnumerable规则)
{
使用(LinqModelDataContext db=new LinqModelDataContext())
{
var auditAgencyRecords=(来自ag,单位为db.Agencies
将ara加入ag.Agency_Id等于ara.AgencyID的db.AuditRuleAccounts
在ara上的db.AuditRuleResults中加入arr.AuditRuleAccountID等于arr.AuditRuleAccountID
联接在arr.AuditRuleEnterpriseID上的db.AuditRuleEnterpriseID中等于are.AuditRuleEnterpriseID
选择新的
{
AgencyID=ag.Agency\u Id,
AgencyName=ag.Agency\u Name,
AuditRuleEnterpriseID=arr.AuditRuleEnterpriseID,
校正日期=arr.CorrectedDate,
NbrDaysToCorrect=arr.NbrDaysToCorrect,
}).ToList();
}
}
你可以看到,我正在传递一个数不清的规则。我传入的每个AuditRule对象都有一个名为“ID”的属性
如果我想说,只返回表列AuditRuleEnterprise.Audited与我的规则“ID”属性(我已传递到方法中的对象)中的任何一个ID匹配的记录,我的where子句对此查询会是什么样子
.Where(rules.Select(r => r.ID).Contains(arr.AuditRuleEnterpriseID.AuditID))
或者,在查询语法中
where rules.Select(r => r.ID).Contains(arr.AuditRuleEnterpriseID.AuditID)
尝试:
或者,在查询语法中
where rules.Select(r => r.ID).Contains(arr.AuditRuleEnterpriseID.AuditID)
实际上,linqtosql将其扩展为IN表达式。实际上,linqtosql将其扩展为IN表达式。