Linq join of 3 tables

Question

I have three tables with same fields. I can join 2 tables with following Linq.

 List<CommonPoints> lista = poso.assists.ToList();

 List<CommonPoints> listp = poso.points.ToList();

 List<CommonPoints> listg=poso.goals.ToList();

 var result = from p in listp

          join a in lista

             on p.id equals a.id

          select new Combineded(p.id, p.value, a.value,p.firstName.TheDefault,p.lastName.TheDefault );

I have third table (listg), how could I join the third table with other two or am I going about this the wrong way?

Answer 1

Hello,

You can use LINQ query to join the third table (listg) in a similar way to how you joined the first two tables like following code.

var result = from p in listp
             join a in lista on p.id equals a.id
             join g in listg on p.id equals g.id
             select new Combined(p.id, p.value, a.value, g.value, p.firstName.TheDefault, p.lastName.TheDefault);

As note:Please make sure all three tables (listp, lista, and listg) have the same field structure and you want to join them based on the id field.

Best Regards,

Leon Lu

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