public KnowledgeGraphObjectValue BindParameters {get;}

{
  await 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}");
          }
        }
      }
    }
  });
}

{
  await 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' and '$sel_geom'
    //in this example
    var qry = @"MATCH (p:PhoneNumber) " +
                @"WHERE p.objectid IN $object_ids AND " +
                @"esri.graph.ST_Intersects($sel_geom, p.shape) " +
                @"RETURN p";
    //create a KG query filter
    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);
    kg_qry_filter.BindParameters["object_ids"] = kg_oid_array;

    //Create a polygon based on current map extent
    var extent = MapView.Active.Extent;
    var poly = PolygonBuilder.CreatePolygon(extent.Expand(0.25, 0.25, true));
    kg_qry_filter.BindParameters["sel_geom"] = poly;
    oids.Clear();

    //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)
          {
            #region Process Row

            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}");