LINQ to display list of values separated by a comma

Requirement: We need to display data as a single row of values separated by commas.

Solution:

   Object obj = new Object();

var dbquery = (from g in db.table1

               join gc in db.table2

               on g.id equals gc.id

               where g.prop1 == value1 && gc.prop2 == value2

               select g);

          if (dbquery!= null && dbquery.Count() > 0)

            {

         // Gets all the groups/tags the lead belongs to and joins them with a ','

                obj.PropName=string.Join(",",dbquery.Select(x=>                                                x.propName)); 

           

            }