I do have this code but I want to do it in IQueryable:
var select = (from g in this.context.Grades
join sm in this.context.SubjectMaintenance on g.SubjectCode equals sm.SubjectCode
join st in this.context.Students on g.StudentId equals st.StudentId
where sm.TeacherId == sTeacherId
select new
{
SubjectCode = g.SubjectCode,
SubjectName = g.SubjectName,
StudentName = st.LastName + ", " + st.Firstname,
PrelimGrade = g.PrelimGrade,
MidtermGrade = g.PrelimGrade,
FinalGrade = g.PrelimGrade,
}).ToList();
How do I write it using IQueryable
? My start code for IQueryable
is this:
IQueryable<Grades> query = this.context.Grades;
IQueryable<SubjectMaintenance> query1 = this.context.SubjectMaintenance;
IQueryable<Students> query2 = this.context.Students;
Please do help as I need it in my project. Thank you in advance for your help.
You can follow the below logic to write your query.
var query1 =
var query2 =
var join = query1.Join(query2, x => x.ParentId, y => y.ParentId, (query1, query2) => new { query1, query2 })
Please follow this document also.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.