protected async Task <bool> ClearAndLoad(Sling Sling, DateTime dtBeg, DateTime dtEnd) { try { Sling.ClearCalendar(); await Sling.LoadCalendar(dtBeg, dtEnd); //await Sling.LoadAvailability(dtBeg, dtEnd); Render(Sling, dtBeg, dtEnd); } catch (Exception Ex) { Err Err = new Err(Ex); Response.Write(Err.Html()); } return(true); }