Question

I have two tables:

Phase :

long ID
string Name

and another Activity :

long ID
string Name
long PhaseID

I already know the name of the phases and I want to get the activity for those particular phases. Do i add PhaseName to the activity table or do I do it through join in LINQ?

Maybe something like this?

var query = from a in entities.Activities
                        join p in entities.Phases on a.PhaseId equals p.Id
                        where p.Name == "Preplanning"

… and here im not sure how to finish this query..

Thanks for your help!

Answer 1

The code that you’ve provided will use an Inner Join to find all Activities where the Phase with Name “Preplanning” exists.
To finish your query you need to add a select clause.

var query = from a in entities.Activities
                 join p in entities.Phases on a.PhaseId equals p.Id
                 where p.Name == "Preplanning"
                 select a.Name   

will return IEnumerable<string> of all activity names.