public SampleDataProvider()
{
InitializeComponent();
var objectDataProv = FindResource("src") as DataSourceProvider;
myResources = objectDataProv.Data as PeopleSource;
}
private void Delete()
{
if (PeopleSource.SelectedIndex >= 0)
{
if (MessageBox.Show($"Delete {PeopleSource.SelectedItem.Person.FirstName}?", "Question", MessageBoxButton.OKCancel) == MessageBoxResult.OK)
{
PeopleSource.RemoveAt(PeopleSource.SelectedIndex);
}
}
}
public void TestSource()
{
IPerson addedPerson;
using (var source = new PeopleSource()) {
addedPerson = source.Add("Test two");
}
using (var source = new PeopleSource())
{
var foundPerson = source.Query.FirstOrDefault(p => p.PersonId == addedPerson.PersonId);
Assert.AreEqual("Test two", foundPerson.Name, "Person not found via query");
source.Delete(foundPerson.PersonId);
}
}
/// <summary>
/// Creates new instance of TreeViewViewModel class
/// </summary>
public TreeViewViewModel()
{
// instantiate data source
mSource = new PeopleSource();
// instantiate command
GroupingSelectionCommand = new RelayCommand <GroupingSelection>(selectedGroup =>
{
// save selected grouping mode
mGroupingType = selectedGroup;
// inform subscribers about the DataSource property change
if (PropertyChanged != null)
{
PropertyChanged.Invoke(this, new PropertyChangedEventArgs("DataSource"));
}
});
}
private void Load()
{
// for demo, in real app use a data service for example
var people = new InitItemCollection <PersonViewModel>();
for (int i = 0; i < 3; i++)
{
var viewModel = this.PeopleSource.CreateNew();
var person = new PersonModel
{
Id = i + 1,
FirstName = $"First.{i}",
LastName = $"Last.{i}"
};
people.Add(viewModel, person);
}
PeopleSource.Load(people);
}