void OnUpdateDisplay(object sender, EventArgs e)
{
treeView1.AfterSelect -= treeView1_AfterSelect;
treeView1.BeginUpdate();
treeView1.SuspendLayout();
treeView1.Nodes.Clear();
var items = _model.GetTreeItems();
foreach (var item in items)
{
var node = item.MakeTreeNode();
treeView1.Nodes.Add(node);
// if(item.Selected)
// treeView1.SelectedNode = node;
}
treeView1.ExpandAll();
var selectedItem = _model.GetSelectedItem(items);
foreach (TreeNode topLevelNode in treeView1.Nodes)
{
if (topLevelNode.Tag == selectedItem)
{
treeView1.SelectedNode = topLevelNode;
break;
}
foreach (TreeNode node in topLevelNode.Nodes)
{
if (node.Tag == selectedItem)
{
//This will not actually work under a number of circumstances
//and caused a crash in WeSay and some really wierd behavior in the palaso writing systems UI test app
//see http://social.msdn.microsoft.com/Forums/en-US/winforms/thread/4843bab1-a7fb-48d6-a66a-80b2e7232e73
treeView1.SelectedNode = node;
break;
}
}
}
//if there is no current selection, need to create a dummy invisible node
//to be selected, else the tree view control selects the first one
if (selectedItem == null)
{
treeView1.SelectedNode = treeView1.Nodes.Add(string.Empty);
}
treeView1.ResumeLayout(false);
treeView1.EndUpdate();
if (treeView1.SelectedNode != null)
{
treeView1.SelectedNode.EnsureVisible();
}
treeView1.AfterSelect += treeView1_AfterSelect;
}
