//get an observablecollection list of learn objects
private async Task GetDataAsync(string id)
{
var learnServices = new LearnServices();
var list = await learnServices.GetLearn(id);
LearnOC = new ObservableCollection <Learn>(list);
}
//get a list of learn objects
private async Task GetDataAsyncByWord(string keyword, string type)
{
var learnServices = new LearnServices();
var message = await learnServices.GetLearnByNameExactBool(keyword, type);
if (message)
{
//-->if learn existed
var learn = await learnServices.GetLearnByNameExact(keyword, type);
LearnList.Add(learn);
}
}