Group records by id - linq

Question

I am getting records like this returned from a stored procedure:
Id FullName Review Rating
---------------------------------------------
1 john sk 4.5
1 john hhh 3.5
1 john jhj 1.5
2 rig www 3.5
2 rig eee 1.5
This is my query which return records like above:
var empDetails = context.Database.SqlQuery<SearchWorkerDetail>("exec SearchWorkerDetail #param1", new SqlParameter("param1", searchKeyword) )
.Select( d => new
{
id = d.Id,
FullName = d.FullName,
Email = d.Email,
ServiceDescription = d.ServiceDescription,
Skills = d.Skills,
Name = d.Name,
r = d.Review,
averagerating = d.Rating
}).ToList();
Now I want to group the records by Id and want to select data.
Expected output:
SearchWorkerDetail=
[0]:{
Id:1
FullName:John
Email:john#yahoo.com
ReviewList:
{
[0]: Review=sk
rating=4.5
[1]: Review=hhh
rating=3.5
[2]: Review=jhj
rating=1.5
}
[1]:{
Id:2
FullName:rig
Email:rig#yahoo.com
ReviewList:
{
[0]: Review=www
rating=3.5
[1]: Review=eee
rating=1.5
}
}
For corresponding id I want list of reviews (1 to many relation between worker and review)
My class structure:
[DataContract]
public class SearchWorkerDetail
{
[DataMember]
public int Id { get; set; }
[DataMember]
public string FullName { get; set; }
[DataMember]
public string Email { get; set; }
[DataMember]
public string ServiceDescription { get; set; }
[DataMember]
public string Skills { get; set; }
[DataMember]
public string Name { get; set; }
[DataMember]
public string Review { get; set; }
[DataMember]
public Nullable<decimal> Rating { get; set; }
[DataMember]
public List<ReviewModel> RatingList { get; set; }
}
My query is like this:
var data = empDetails.GroupBy(m=>m.id)
.Select(g => new SearchWorkerDetail
{
id =g.Key,
FullName = g.FullName,
Reviewlist =
}
).ToList();
Here it is not allowing me to select FullName and other (eg: Email, skillDescription, Skills etc)
How do I do this?

Answer 1

There is no FullName property on g because it's a group not a single object. However you can get the FullName of first record in the group then create a ReviewList for each record in the group by using another Select:
empDetails.GroupBy(m => m.id)
.Select(g => new SearchWorkerDetail
{
id = g.Key,
FullName = g.First().FullName,
Reviewlist= g.Select(x => new ReviewModel
{
Review = x.Review,
rating = x.Rating
}.ToList()
}).ToList();
Or you can also group by based on FullName:
empDetails.GroupBy(m => new { m.id, m.FullName })
.Select(g => new SearchWorkerDetail
{
id = g.Key.id,
FullName = g.Key.FullName,
/* rest is the same */
}).ToList();