How to join more than 2 tables using linq

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Respected sir/s,

In my windows application using vb.net,
i have total 4 tables having same columns,
here i want to join those 4 tables together with group and sum of there values too...

Table1

ID  Name  Sale
----------------
1   ABC   10
2   XYZ   20
3   PQR   30

Table2

ID  Name  Sale
----------------
1   ABC   30
2   XYZ   40

Table3

ID  Name  Sale
----------------
1   PQR   20
2   XYZ   20

Table4

ID  Name  Sale
----------------
1   ABC   10
2   XYZ   20

Result :

ID  Name  Sale
----------------
1   ABC   50
2   XYZ   100
3.  PQR   50

Its group total..of all 4 tables...
Please help me..

Thanks

Posted 3-Dec-13 0:46am

Sunil Bansode

Updated 3-Dec-13 1:56am

v2

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Dharmendra-18 3-Dec-13 6:54am

you can use like this

var query=from r1 in db.tb1
from r2 in db.tb2
from r3 in db.tb3
from r4 in db.tb4
where r1.Id==r2.Id && r2.Id==r3.Id && r3.Id==r4.Id && r4.Id==r1.Id
select new { r1.col,.. , r2.col,.. , r3.col,... ,r4.col,...}

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Thomas ktg · Answer 1 · 2013-12-03T01:00:00

Solution 1

Refer here for the answers with the similar question.
http://stackoverflow.com/questions/13661817/vb-net-linq-join-2-tables-then-group-by-a-column-then-sum[^]

Posted 3-Dec-13 1:00am

Thomas ktg