private bool IsMultiSelectCheckBoxChecked(TreeView tree, TreeViewNode node)
{
var treeViewItem = tree.ContainerFromNode(node) as TreeViewItem;
var checkBox = FindVisualChildByName(treeViewItem, "MultiSelectCheckBox") as CheckBox;
return(checkBox.IsChecked == true);
}
private void SetAutomationIdForNodes(TreeView tree)
{
var listControl = FindVisualChildByName(this.TestTreeView, "ListControl") as TreeViewList;
Stack <TreeViewNode> pendingNodes = new Stack <TreeViewNode>();
foreach (var node in tree.RootNodes)
{
pendingNodes.Push(node);
}
while (pendingNodes.Count > 0)
{
var currentNode = pendingNodes.Pop();
foreach (var child in currentNode.Children)
{
pendingNodes.Push(child);
}
var container = tree.ContainerFromNode(currentNode);
if (container != null)
{
AutomationProperties.SetAutomationId(container as DependencyObject, GetNodeContent(currentNode));
(container as FrameworkElement).SetValue(FrameworkElement.NameProperty, GetNodeContent(currentNode));
}
}
}
/// <summary>
/// 选中TreeViewNode并将其滚动到UI中间
/// </summary>
/// <param name="Node">要选中的Node</param>
/// <param name="View">Node所属的TreeView控件</param>
/// <returns></returns>
public static void SelectNode(this TreeView View, TreeViewNode Node)
{
if (View == null)
{
throw new ArgumentNullException(nameof(View), "Parameter could not be null");
}
View.SelectedNode = Node;
View.UpdateLayout();
if (View.ContainerFromNode(Node) is TreeViewItem Item)
{
Item.StartBringIntoView(new BringIntoViewOptions {
AnimationDesired = true, VerticalAlignmentRatio = 0.5
});
}
}
private void GetCheckBoxStates(TreeView tree)
{
StringBuilder sb = new StringBuilder();
Stack <TreeViewNode> pendingNodes = new Stack <TreeViewNode>();
pendingNodes.Push(tree.RootNodes[0]);
while (pendingNodes.Count > 0)
{
var currentNode = pendingNodes.Pop();
var children = currentNode.Children;
var size = children.Count;
for (int i = 0; i < size; i++)
{
pendingNodes.Push(currentNode.Children[size - 1 - i]);
}
var treeViewItem = tree.ContainerFromNode(currentNode) as TreeViewItem;
var checkBox = FindVisualChildByName(treeViewItem, "MultiSelectCheckBox") as CheckBox;
if (checkBox.IsChecked == true)
{
// selected
sb.Append("s|");
}
else if (checkBox.IsChecked == false)
{
// unselected
sb.Append("u|");
}
else
{
// partial selected
sb.Append("p|");
}
}
Results.Text = sb.ToString();
}
