How to peform innerjoin operation on two datatables with and or conditions

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Hi All,

I know how to perform simple innerjoin operation on two databales like below

XML

DataTable result = (from t1 in dt1.AsEnumerable()
                                    join t2 in dt2.AsEnumerable() on t1.Field<int>("id") equals t2.Field<int>("id")
                                   select t1).CopyToDataTable();

but I want to write and or condition in the above query can any body help me how can I reach this.
like below

XML

DataTable result = (from t1 in dt1.AsEnumerable()
                                    join t2 in dt2.AsEnumerable() on t1.Field<int>("id") equals t2.Field<int>("id") && t1.Field<int>("id2") not equals t2.Field<int>("id2")
                                   select t1).CopyToDataTable();

Posted 18-Dec-12 2:16am

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Dominic Abraham · Answer 1 · 2012-12-18T04:26:00

Solution 1

Hi
I hope the below code will give you some hints.

XML

DataTable result = (from t1 in dt1.AsEnumerable()
                          join t2 in dt2.AsEnumerable() on t1.Field<int>("id") equals t2.Field<int>("id")
                          where  t1.Field<int>("id1") != t2.Field<int>("id2")
                          select t1).CopyToDataTable();

Posted 18-Dec-12 4:26am

Dominic Abraham

Updated 18-Dec-12 4:27am

v2

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Dominic Abraham 18-Dec-12 13:15pm

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