public void LoadExpansionState(ITreeViewModelItem item)
{
var itemPath = item.CreatePath();
if (ExpansionStates.ContainsKey(itemPath))
{
item.IsExpanded = ExpansionStates[itemPath];
}
}
public void SaveExpansionState(ITreeViewModelItem item)
{
var itemPath = item.CreatePath();
if (ExpansionStates.ContainsKey(itemPath))
{
ExpansionStates[itemPath] = item.IsExpanded;
}
else
{
ExpansionStates.Add(itemPath, item.IsExpanded);
}
}