private void toolStripMenuItemInsertEnumerationConstant_Click(object sender, EventArgs e)
{
TreeNode tnParent = this.treeView.SelectedNode;
DocEnumeration docEnum = (DocEnumeration)tnParent.Tag;
DocConstant docConstant = new DocConstant();
docEnum.Constants.Add(docConstant);
this.treeView.SelectedNode = this.LoadNode(tnParent, docConstant, docConstant.ToString(), false);
toolStripMenuItemEditRename_Click(this, e);
}