Order results using table columns with LINQ

In Microsoft Dataverse you can use lookup or choices (picklist) columns to order results within a LINQ query. This topic shows several examples of this type of query.

Using a lookup value to Order By

The following sample shows use the lookup column PrimaryContactId in an Order By clause.

using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
 var query_orderbylookup = from a in svcContext.AccountSet
                           where a.Address1_Name == "Contoso Pharmaceuticals"
                           orderby a.PrimaryContactId
                           select new
                           {
                            a.Name,
                            a.Address1_City
                           };
 foreach (var a in query_orderbylookup)
 {
  System.Console.WriteLine(a.Name + " " + a.Address1_City);
 }
}

Using choices to Order By

The following sample shows use of a choices (picklist) value to order by.

using (ServiceContext svcContext = new ServiceContext(_serviceProxy))
{
 var query_orderbypicklist = from c in svcContext.ContactSet
                             where c.LastName != "Parker" &&
                             c.AccountRoleCode != null
                             orderby c.AccountRoleCode, c.FirstName
                             select new
                             {
                              AccountRole = c.FormattedValues["accountrolecode"],
                              c.FirstName,
                              c.LastName
                             };
 foreach (var c in query_orderbypicklist)
 {
  System.Console.WriteLine(c.AccountRole + " " +
   c.FirstName + " " + c.LastName);
 }
}

See also

Build queries with LINQ (.NET Language-Integrated Query)
Page large result sets with LINQ