/// <summary>
/// Requery all child items - this can be useful when we
/// expand a folder for the very first time. Here we use task library with
/// async to enable synchronization. This is for parts of other commands
/// such as New Folder command which requires expansion of sub-folder
/// items before actual New Folder command can execute.
/// </summary>
/// <param name="expandedItem"></param>
/// <returns></returns>
private async Task <bool> RequeryChildItems(FolderViewModel expandedItem)
{
await Task.Run(() =>
{
expandedItem.ClearFolders(); // Requery sub-folders of this item
expandedItem.LoadFolders();
});
return(true);
}
public override async Task <int> ChildrenLoadAsync()
{
await Task.Run(() => { FolderViewModel.LoadFolders(this); });
return(base.ChildrenCount);
}
/// <summary>
/// Load all sub-folders into the Folders collection.
/// </summary>
public override void ChildrenLoad()
{
FolderViewModel.LoadFolders(this);
}
