public KnowledgeGraphSearchFilter()

//On the QueuedTask...
//and assuming you have established a connection to a knowledge graph
//...
//Construct a KG search filter. Search text uses Apache Lucene Query Parser
//syntax - https://lucene.apache.org/core/2_9_4/queryparsersyntax.html
var kg_sf = new KnowledgeGraphSearchFilter()
{
  SearchTarget = KnowledgeGraphNamedTypeCategory.Entity,
  SearchText = "Acme Electric Co.",
  ReturnSearchContext = true,
  MaxRowCount = 10 //Default is 100 if not specified
};

//submit the search - returns a KnowledgeGraphCursor
var e = 0;
using (var kg_rc = kg.SubmitSearch(kg_sf))
{
  //wait for rows to be returned from the server
  //note the "await"...
  while (await kg_rc.WaitForRowsAsync())
  {
    //Rows have been retrieved - process this "batch"...
    while (kg_rc.MoveNext())
    {
      //Get the current KnowledgeGraphRow
      using (var graph_row = kg_rc.Current)
      {
        //We are returning entities from this search
        var entity = graph_row[0] as KnowledgeGraphEntityValue;
        var entity_type = entity.GetTypeName();
        var record = new List<string>();
        //discover keys(aka "fields") dynamically via GetKeys
        foreach (var prop_name in entity.GetKeys())
        {
          var obj_val = entity[prop_name] ?? "null";
          record.Add(obj_val.ToString());
        }
        System.Diagnostics.Debug.WriteLine(
          $"{entity_type}[{e++}] " + string.Join(", ", record));
        //or use "Process a KnowledgeGraphRow Value" snippet
        //ProcessKnowledgeGraphRowValue(entity);
      }
    }
  }//WaitForRowsAsync
}//SubmitSearch