public object GetValue(string tag) { DataQueryParams query = new CurrentValueQuery(tag); ItemErrors errors; Proficy.Historian.ClientAccess.API.DataSet dataset = null; Connection.IData.Query(ref query, out dataset, out errors); if (dataset.TotalSamples > 0) { return(dataset[tag].GetValue(0)); } else { return(""); } }
public Dictionary <string, object> GetValues(params string[] tags) { if (tags == null || tags.Length == 0) { return(new Dictionary <string, object>()); } DataQueryParams query = new CurrentValueQuery(tags); ItemErrors errors; Proficy.Historian.ClientAccess.API.DataSet dataset = null; Connection.IData.Query(ref query, out dataset, out errors); Dictionary <string, object> values = new Dictionary <string, object>(); foreach (var item in dataset) { if (item.Value.Count() > 0) { values.Add(item.Key, item.Value.GetValue(0)); } } foreach (string key in tags) { if (dataset.ContainsKey(key)) { values[key] = dataset[key].GetValue(0); } else { values[key] = ""; } } return(values); }
public object QueryCurrentValue(params string[] tags) { ItemErrors errors; Proficy.Historian.ClientAccess.API.DataSet set = new Proficy.Historian.ClientAccess.API.DataSet(); DataQueryParams query = new CurrentValueQuery(tags) { Fields = DataFields.Time | DataFields.Value | DataFields.Quality }; CurrentValue cv= new CurrentValue(); sc.IData.Query(ref query, out set, out errors); return set; }