public void GetData(Action<DataItem, Exception> callback)
{
// Use this to connect to the actual data service
var item = new DataItem("Welcome to MVVM Light");
callback(item, null);
}
public void GetData(Action<DataItem, Exception> callback)
{
// Use this to create design time data
var item = new DataItem("Welcome to MVVM Light [design]");
var province = new DataItem().ProvinceItem();
callback(item, null);
}
/// <summary>
/// Initializes a new instance of the MainViewModel class.
/// </summary>
public MainViewModel(IDataService dataService)
{
_dataService = dataService;
_dataService.GetData(
(item, error) =>
{
if (error != null)
{
// Report error here
return;
}
WelcomeTitle = item.Title;
Province = new DataItem().ProvinceItem();
GetCity = new RelayCommand<BaseInfo>((x) => ExecuteGetCity(x));
GetCityNext = new RelayCommand<BaseInfo>((x) => ExecuteGetCityNext(x));
ShowMessage = new RelayCommand<string>((x) => ExecuteShowMessage(x));
});
}
private object ExecuteGetCityNext(BaseInfo baseinfo)
{
if (baseinfo != null)
{
b = baseinfo;
CityNext = new DataItem().CityNextItem(baseinfo.Id);
}
return null;
}
private object ExecuteGetCity(BaseInfo baseinfo)
{
if (baseinfo != null)
{
a = baseinfo;
City = new DataItem().CityItem(baseinfo.Name);
}
return null;
}