private string SerializeJson <T>(int idSource, Func <T, bool> predicate = null) where T : class, new()
{
if (predicate == null)
{
predicate = (x) => true;
}
List <T> ds = new List <T>();
if (_dataSource.ContainsKey(idSource))
{
ds = _dataSource[idSource].OfType <T>().Where(predicate).ToList();
}
var response = new StandardResponse <IEnumerable <T> >()
{
Data = ds
};
return(response.GetJson());
}
