LINQ Query - How i can make my query better? -

i have written following linq query return list , iterating list separately convert time hours , taking sum of hours each list item.

i sure might not right away send 3 database calls.

can re-write in better way e.g. groupby or other way assign data model, converting idletime hours , taking sum of idletime??

model class

public class testmodel {     public string tasksummary { get; set; }     public string locationname { get; set; }     public float idletime { get; set; }     public string description { get; set; }     public float idletimesum { get; set; }     public guid taskid { get; set; } } 

linq query

list<testmodel> list = _context.time                              .include(x => x.report)                              .include(x => x.report.task)                              .include(x => x.report.task.location)                              .where(x => taskids.contains(x.report.taskid))                              .select(x => new testmodel                              {                                  tasksummary = x.report.task.summary,                                  locationname = x.report.task.location.name,                                  idletime = x.duration,                                  description = x.description,                                  taskid = x.report.taskid,                              }).tolist(); 

how converting hours?

foreach (var item in list)     item.idletime = item. idletime / 60; 

how taking sum?

        foreach (var item in list)             item.idletimesum = item. idletime; 

just add projection:

                         .select(x => new testmodel                          {                              tasksummary = x.report.task.summary,                              locationname = x.report.task.location.name,                              idletime = x.duration / 60.0f,                              description = x.description,                              taskid = x.report.taskid,                              npthourssum = x.duration / 60.0f,                          }).tolist(); 

although since you're not showing sum suspect there's more problem that.