我的LINQ to实体查询有问题
我目前有一个LINQ查询:我的LINQ to实体查询有问题,linq,entity-framework,linq-to-entities,Linq,Entity Framework,Linq To Entities,我目前有一个LINQ查询: public List<EventSchool> GetEventSchools(int eventID) { var eventSchools = db.EventSchools .Include("Organisation") .Where(e => e.EventID == eventID) .ToList(); foreach (
public List<EventSchool> GetEventSchools(int eventID)
{
var eventSchools = db.EventSchools
.Include("Organisation")
.Where(e => e.EventID == eventID)
.ToList();
foreach (var ev in eventSchools)
{
if (db.EventSchoolKeyStages.Where(e => e.EventSchoolID == ev.EventSchoolID).Count() > 0)
{
int ks = db.EventSchoolKeyStages
.Where(e => ev.EventSchoolID == ev.EventSchoolID)
.Sum(e => e.Males + e.Females);
ev.StudentNumbers = ks;
}
}
return eventSchools;
}
所有项目的StudentNumber均为20,而不是:
Item 1 - 20
Item 2 - 3
Item 3 - 700
不确定我做错了什么?您的查询中有一个错误:
.Where(e => ev.EventSchoolID == ev.EventSchoolID)
应该是:
.
其中(e=>e.EventSchoolID==ev.EventSchoolID)
您的查询中有一个错误:
.Where(e => ev.EventSchoolID == ev.EventSchoolID)
应该是:
.其中(e=>e.EventSchoolID==ev.EventSchoolID)
您在这里输入了一个错误:
.Where(e => ev.EventSchoolID == ev.EventSchoolID)
这句话永远是真的。我猜你的意思是
.Where(e => e.EventSchoolID == ev.EventSchoolID)
^^^
在指定的位置有不同。您这里有一个打字错误:
.Where(e => ev.EventSchoolID == ev.EventSchoolID)
这句话永远是真的。我猜你的意思是
.Where(e => e.EventSchoolID == ev.EventSchoolID)
^^^
在指定的位置不同