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public class ItemsSourceSelector : IItemsSourceSelector
{
public IEnumerable GetItemsSource(object record, object dataContext)
{
if (record == null)
return null;
var orderinfo = record as OrderDetails;
var countryName = orderinfo.ShipCountry;
var viewModel = dataContext as ViewModel;
//Returns ShipCity collection based on ShipCountry.
if (viewModel.ShipCities.ContainsKey(countryName))
{
ObservableCollection
viewModel.ShipCities.TryGetValue(countryName, out shipCities);
return shipCities.ToList();
}
return null;
}
} |
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<Window.Resources>
<local:ItemsSourceSelector x:Key="itemSourceSelector" />
Window.Resources>
<syncfusion:GridMultiColumnDropDownList AllowEditing="True" HeaderText="ShipCity" DisplayMember="ShipCityName"
ItemsSourceSelector="{StaticResource itemSourceSelector}"
MappingName="ShipCityID" ValueMember="ShipCityID"/> |
