1 parent table and 5 child tables

thanks, but i have 1 parent and 5 child?
Schema database is into ado.net (file dbmx) with relactions.
Must i repeat relactions in the query linq o no?

thanks

yes. You can just bind the IQueryable result from LINQ to the DataGridView. for example :

but if i want use linq to crate query to datagrid?? it'possible?

Dear viviano
Are you want to without using view make query for source display in gridview right
but i tell you one thing View is also Sql Query .
and also you can use join for one parent and five child to show all record

one parent table  p1
five child table c1,c2,c3,c4,c5

select p1.name,c1.name,c2.name,c3.name,c4.name,c5.name
from p1
 inner join c1 on p1.p_id =c1.c1_id
 inner join c2 on p1.p_id =c2.c2_id
 inner join c3 on p1.p_id =c3.c3_id
 inner join c4 on p1.p_id =c4.c4_id
 inner join c5 on p1.p_id =c5.c5_id

You are try to change this query regarding you want
and if you create view is not effect on this query

create view vwtemp as
select p1.name,c1.name,c2.name,c3.name,c4.name,c5.name
from p1
 inner join c1 on p1.p_id =c1.c1_id
 inner join c2 on p1.p_id =c2.c2_id
 inner join c3 on p1.p_id =c3.c3_id
 inner join c4 on p1.p_id =c4.c4_id
 inner join c5 on p1.p_id =c5.c5_id

Try to create a sql query of stored procedure by joining those tables, Then use the selected result to bind the datagrid.