Load - On - Demand Null reference Exception Issue #3
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Task
Load - On - Demand Null reference Exception Issue
Fix Details
private void ExecuteOnDemandLoading(object obj)
{
var node = obj as TreeViewNode;
node.ShowExpanderAnimation = true;
LoadOnDemandModel loadOnDemandModel = node.Content as LoadOnDemandModel
Application.Current.Resources.DispatcherQueue.TryEnqueue(() =>
{
var items = GetSubMenu(loadOnDemandModel.ID);
node.PopulateChildNodes(items);
if (items.Any())
node.IsExpanded = true;
node.ShowExpanderAnimation = false;
});
}