Applying join on two datatable in asp.net (c#) using LINQ | using join, where clause in LINQ

Applying join on two datatable in asp.net (c#) using LINQ.

Below is the Query :

1.LINQ Join Query:

DataTable result = (from t1 in SomeDatatable1.AsEnumerable()
                    join t2 in SomeDatatable2.AsEnumerable() on t1.Field<string>("EmpId") equals                                                                                       t2.Field<string>("EmpId")
                    select t1).CopyToDataTable();


2.LINQ Join with Where clause Query:

DataTable result = (from t1 in SomeDatatable1.AsEnumerable()
                    join t2 in SomeDatatable2.AsEnumerable() on t1.Field<string>("EmpId") equals                                                                                       t2.Field<string>("EmpId")
                    where t2.Field<string>("EmpId") == "100"
                    select t1).CopyToDataTable();