protected override Control CreateEditor(TreeNodeAdv node)
{
TextBox textBox = CreateTextBox();
textBox.TextAlign = TextAlign;
textBox.Text = GetLabel(node);
textBox.BorderStyle = BorderStyle.FixedSingle;
textBox.TextChanged += new EventHandler(textBox_TextChanged);
_label = textBox.Text;
SetEditControlProperties(textBox, node);
return textBox;
}