// TODO fiure out a way to call this async and still maintain order
// maybe blocking collection + cancellationtokensource
private void UpdateDataContext()
{
if (Content == null || !IsSelected || GetDataContext == null)
{
return;
}
// while fetching the dataconext, we will switch IsBusy accordingly
using (var token = BusyStack.GetToken())
{
var currentContext = Content.DataContext as ObservableObject;
var newContext = GetDataContext.Invoke();
if (currentContext == null && newContext == null)
{
return;
}
if (EqualityComparer <ObservableObject> .Default.Equals(currentContext, newContext))
{
return;
}
Content.DataContext = newContext;
}
}
public void BindData(CriteriaOperator filter)
{
_context.SetFilter("DepartFilter", filter);
var context = new GetDataContext {
GetData = GetData, Context = SynchronizationContext.Current
};
context.GetData.BeginInvoke(new AsyncCallback(AsBindData), context);
}
public MainWindow()
{
DataContext = new MainModel(this);
InitializeComponent();
Loaded += (sender, e) =>
{
GetDataContext.StartServer();
};
}
