private async void TreeView_LoadOnDemandEvent(object sender, LoadOnDemandEventArgs e)
{
if (e.Action == Action.RequestStatus)
{
e.HasChildNodes = (e.Node.Content as MusicInfo).HasChild;
}
else if (e.Action == Action.PopulateNodes)
{
var viewModel = new MusicInfoRepository();
var node = e.Node;
if (node.ChildNodes.Count > 0)
{
node.IsExpanded = true;
return;
}
node.ShowExpanderAnimation = true;
await Task.Delay(2000);
MusicInfo musicInfo = node.Content as MusicInfo;
var items = viewModel.GetSubMenu(musicInfo.ID);
node.PopulateChildNodes(items);
if (items.Count() > 0)
{
node.IsExpanded = true;
}
node.ShowExpanderAnimation = false;
}
}
private void TAddressListNew_LoadOnDemand(object sender, LoadOnDemandEventArgs e)
{
if (!this.m_vmViewModel.AddNextDemandBatch(ref e))
{
this.TAddressListNew.LoadOnDemand -= TAddressListNew_LoadOnDemand;
}
}
public bool AddNextDemandBatch(ref LoadOnDemandEventArgs e)
{
this.currentPage++;
List <AddressBinding> lstAddressItemsSelector = GetAddressItemsSelector(this.currentPage, this.itemsPerPage);
e.IsDataLoaded = true;
if (lstAddressItemsSelector != null && lstAddressItemsSelector.Count > 0)
{
foreach (var objAddressItemsSelector in lstAddressItemsSelector)
{
this.ModelAddressOList.Add(objAddressItemsSelector);
}
return(true);
}
return(false);
}
