Question

Here is my problem. i have 3-5 persons that is going to set a grade on one person and they use their own individual row to do so, and what I’m having trouble to do is to sum and average the grade from individual data across multiple rows on the same table.

in the select new statement i have made a pseudo answer of what i want

    var users = from workRew in db.Reviews
                select new
                {
                    UserID = workRew.UserID.DistinctOfSomeSort
                    AvgGrade = workRew.Grade.Sum/CountOfSomeSort
                };

Here i a illustration.
So if i have this table

| SomeID | UserID | Grade |
|   1    |   2    |   3   |
|   2    |   3    |   1   |
|   3    |   2    |   1   |

And this is the output i want from the LINQ query on the above (In theory ateast)

| UserID | AvgGrade |
|   2    |    2     |
|   3    |    1     |

EDIT: Simplified the whole case, to a great extent.

Answer 1

It should look something like this fragment:

group by user.UserID
select new
{
   User = user.UserID
   TotGradeCount = workRew.Grade.Sum()
   Graders = workRew.Grade.Count()
}