c# - Get parameters outside of Grouping Linq -

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i need field's out of group using linq example, code:

(from paymenttypes in paymenttypes_datatable.asenumerable() join cashtransactions in cashtransactions_datatable.asenumerable()     on paymenttypes.field<int32>("cashpaymenttype_id")     equals cashtransactions.field<int32>("cashpaymenttype_id")     joinedcashtransactions cashtransactions in joinedcashtransactions.defaultifempty() group cashtransactions paymenttypes.field<int32>("cashpaymenttype_id") grouppaymenttypes select new {     cashpaymenttype_id = 0, // paymenttypeid     cashpaymenttype_name = "", // paymenttypename     cashtransaction_amount = grouppaymenttypes.sum(a =>        != null           ? (a.field<int32>("cashtransactionstatus_id") == 1 ||             a.field<int32>("cashtransactionstatus_id") == 3 ? 1 : -1) *             a.field<double>("cashtransaction_amount")            : 0.00), }).aggregate(paymenttypestransactions_datatable, (dt, result) => {      dt.rows.add(result.cashpaymenttype_id, result.cashpaymenttype_name,    result.cashtransaction_amount); return dt; });

this linq works need fields cashpaymenttype_id , cashpaymenttype_name within paymenttypes

assuming paymenttypeid - paymenttypename 1-to-1, change group this:

group cashtransactions new  {      paymenttypeid = paymenttypes.field<int32>("cashpaymenttype_id"),     paymenttypename = paymenttypes.field<string>("cashpaymenttype_name") } grouppaymenttypes

the select this:

select new {     cashpaymenttype_id = grouppaymenttypes.key.paymenttypeid,      cashpaymenttype_name = grouppaymenttypes.key.paymenttypename,      ... }

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