How to reuse where clauses in Linq To Sql queries

Question

I have users searching records of type Record. They type a search term in a textbox and then I search records by matching several fields with the search term.

My que

Answer 1

Use a CompiledQuery!

var filter = CompiledQuery.Compile(
    (DatabaseDataContext dc, Record record, string term) =>
        record.Field1.ToLower().Contains(term) ||
        record.Field2.ToLower().Contains(term) ||
        record.Field3.ToLower().Contains(term)
);

var results = from record in DataContext.Records
              where filter(DataContext, record, term)
              select record;

For more information, see How to: Store and Reuse Queries.