private void setFilterBt_Click(object sender, RoutedEventArgs e)
{
HCondition filter = new HCondition();
HArrayOfValue valueArray = new HArrayOfValue();
valueArray.SetName("publisher");
JArray ja = new JArray();
ja.Add("urn:localhost:u1");
ja.Add("urn:localhost:u2");
valueArray.SetValues(ja);
filter.SetInValue(valueArray);
Debug.WriteLine("\n-- set filer --");
Debug.WriteLine(filter);
Debug.WriteLine("---------------\n");
//Remove the filter.
//HCondition filter = new HCondition(JObject.Parse("{}"));
client.SetFilter(filter, callback);
}