public KnowledgeGraphObjectValue BindParameters {get;}

QueuedTask.Run(async () =>
{
  //assume we have, in this case, a list of ids (perhaps retrieved
  //via a selection, hardcoded (like here), etc.
  var oids = new List<long>() { 3,4,7,8,9,11,12,14,15,19,21,25,29,
      31,32,36,37,51,53,54,55,56,59,63,75,78,80,84,86,88,96,97,98,101,
      103,106};
  //In the query, we refer to the "bind parameter" with the
  //"$" and a variable name - '$object_ids' in this example
  var qry = @"MATCH (p:PhoneNumber) " +
            @" WHERE p.objectid IN $object_ids " +
            @"RETURN p";

  //we provide the values to be substituted for the variable via the
  //KnowledgeGraphQueryFilter BindParameter property...
  var kg_qry_filter = new KnowledgeGraphQueryFilter()
  {
    QueryText = qry
  };
  //the bind parameter added to the query filter must refer to
  //the variable name used in the query string (without the "$")
  //Note:
  //Collections must be converted to a KnowledgeGraphArrayValue before
  //being assigned to a BindParameter
  var kg_oid_array = new KnowledgeGraphArrayValue();
  kg_oid_array.AddRange(oids);
  oids.Clear();

  kg_qry_filter.BindParameters["object_ids"] = kg_oid_array;

  //submit the query
  using (var kgRowCursor = kg.SubmitQuery(kg_qry_filter))
  {
    //wait for rows to be returned asynchronously from the server
    while (await kgRowCursor.WaitForRowsAsync())
    {
      //get the rows using "standard" move next
      while (kgRowCursor.MoveNext())
      {
        //current row is accessible via ".Current" prop of the cursor
        using (var graphRow = kgRowCursor.Current)
        {
          var cell_phone = graphRow[0] as KnowledgeGraphEntityValue;
          var oid = cell_phone.GetObjectID();

          var name = (string)cell_phone["FULL_NAME"];
          var ph_number = (string)cell_phone["PHONE_NUMBER"];
          System.Diagnostics.Debug.WriteLine(
            $"[{oid}] {name}, {ph_number}");
        }
      }
    }
  }
});