Build dynamic LINQ?

Posted by d daly on Stack Overflow See other posts from Stack Overflow or by d daly
Published on 2010-03-22T15:22:27Z Indexed on 2010/03/22 15:31 UTC
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Hi

Im using #LINQ# to query data, but can anyone tell me how to build the query dynamically, if the user only wants to report on say 1 of the 3 fields? (see below)

Thanks

DD

var query = from cl in db.tblClaims
                        join cs in db.tblCases
                            on cl.ref_no equals cs.ref_no
                        where
                            cl.claim_status == "Appeal"
                            && cl.appeal_date >= Convert.ToDateTime(txtReferedFromDate.Text)
                            && cl.appeal_date <= Convert.ToDateTime(txtReferedToDate.Text)
                            && cs.referred_from_lho == dlLHO.Text
                            && cs.adviser == dlAdviser.Text
                        select new
                        {
                            Ref = cs.ref_no,
                            ClaimType = cl.claim_type,
                            ClaimStatus = cl.claim_status,
                            AppealDate = cl.appeal_date
                        };
            gvReport.DataSource = query;

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