public async Task <string> Coll(tblCollaborator objtbl)
{
//Tuple<List<tblLabel>, List<tblLabelNotes>, List<tblCollaborator>> result = null;
var list = new List <tblCollaborator>();
list = noteService.Coll(objtbl);
string JSONString;
JSONString = JsonConvert.SerializeObject(list);
return(JSONString);
//return "";
}