/// <summary>
/// Adds the desktop node.
/// </summary>
public static void AddDesktopNode(this ShellTreeView tree)
{
// Get the desktop folder.
var desktopFolder = ShellItem.DesktopShellFolder;
// Create the desktop node.
var desktopNode = new TreeNode
{
Text = desktopFolder.DisplayName,
ImageIndex = desktopFolder.IconIndex,
SelectedImageIndex = desktopFolder.IconIndex,
};
// Map it and add it.
tree.NodesToFolders[desktopNode] = desktopFolder;
tree.ShowRootLines = false;
tree.Nodes.Add(desktopNode);
// Fire the event.
tree.FireOnShellItemAdded(desktopNode);
// Expand it.
//OnBeforeExpand(new TreeViewCancelEventArgs(desktopNode, false, TreeViewAction.Expand));
DoExpand(tree, desktopNode);
desktopNode.Expand();
}
public static void DoExpand(this ShellTreeView tree, TreeNode node)
{
// Clear children - which may in fact be the placeholder.
node.Nodes.Clear();
var nodesToFolders = tree.NodesToFolders;
// Get the shell folder.
ShellItem shellFolder = nodesToFolders[node];
// Create the enum flags.
ChildTypes childFlags = ChildTypes.Folders;
if (tree.ShowFiles)
{
childFlags |= ChildTypes.Files;
}
if (tree.ShowHiddenFilesAndFolders)
{
childFlags |= ChildTypes.Hidden;
}
// Disable update while adding children.
tree.BeginUpdate();
int count = 0;
try
{
// Go through each child.
foreach (var childNode in
EnumerateUnsafe(shellFolder, childFlags, node, nodesToFolders))
{
count++;
// Fire the shell item added event.
tree.FireOnShellItemAdded(childNode);
}
if (count == 0)
{
childFlags = ChildTypes.Files | ChildTypes.Hidden;
foreach (var childNode in
EnumerateUnsafe(shellFolder, childFlags, node, nodesToFolders))
{
count++;
// Fire the shell item added event.
tree.FireOnShellItemAdded(childNode);
}
if (count > 0)
{
}
}
}
catch (Exception ex)
{
if (ex.InnerException != null)
{
ex = ex.InnerException;
}
MessageBox.Show(ex.Message);
}
// Enable update now that we've added the children.
tree.EndUpdate();
}