public void AddItem() { DataItem parent = (DataItem)TreeView.SelectedItem; if (parent == null) { parent = TreeView.Items.OfType <DataItem>().First(); } for (int i = 0; i < 1; i++) { DataItem item = new DataItem("New Item " + i); item.Parent = parent; parent.Children.Add(item); } VirtualizingItemContainer itemContainer = TreeView.GetItemContainer(parent); if (itemContainer != null) { //Update arrow visiblity TreeView.DataBindItem(parent, itemContainer); TreeView.Expand(parent); } }
public static void ExpandTo <T>(this VirtualizingTreeView treeView, T item, Func <T, T> getParent) { if (item == null) { return; } ItemContainerData containerData = treeView.GetItemContainerData(item); if (containerData == null) { treeView.ExpandTo(getParent(item), getParent); treeView.Expand(item); } else { treeView.Expand(item); } }
public static void ExpandTo <T>( this VirtualizingTreeView treeView, T item, Func <T, T> getParent) { if ((object)item == null) { return; } if (treeView.GetItemContainerData((object)item) == null) { treeView.ExpandTo <T>(getParent(item), getParent); treeView.Expand((object)item); } else { treeView.Expand((object)item); } }
public void AddItem() { DataItem item = new DataItem("New Item"); DataItem parent = m_dataItems[m_counter]; parent.Children.Add(item); TreeView.AddChild(parent, item); TreeView.Expand(parent); DataItem subItem = new DataItem("New Sub Item"); item.Children.Add(subItem); TreeView.AddChild(item, subItem); TreeView.Expand(item); m_counter++; m_counter %= m_dataItems.Count; }
public void Add() { foreach (DataItem parent in TreeView.SelectedItems) { DataItem item = new DataItem("New Item"); parent.Children.Add(item); item.Parent = parent; TreeView.AddChild(parent, item); TreeView.Expand(parent); DataItem subItem = new DataItem("New Sub Item"); item.Children.Add(subItem); subItem.Parent = item; TreeView.AddChild(item, subItem); TreeView.Expand(item); m_counter++; } }
public static void ExpandChildren <T>(this VirtualizingTreeView treeView, T item, Func <T, IEnumerable> getChildren) { IEnumerable children = getChildren(item); if (children != null) { treeView.Expand(item); foreach (T child in children) { treeView.ExpandChildren(child, getChildren); } } }
public static void ExpandChildren <T>( this VirtualizingTreeView treeView, T item, Func <T, IEnumerable> getChildren) { IEnumerable enumerable = getChildren(item); if (enumerable == null) { return; } treeView.Expand((object)item); foreach (T obj in enumerable) { treeView.ExpandChildren <T>(obj, getChildren); } }