IfcDoc.FormEdit.toolStripMenuItemInsertUnique_Click C# (CSharp) Method

        private void toolStripMenuItemInsertUnique_Click(object sender, EventArgs e)
        {
            TreeNode tnParent = this.treeView.SelectedNode;
            DocEntity docEntity = (DocEntity)tnParent.Tag;
            DocUniqueRule docAttr = new DocUniqueRule();
            docEntity.UniqueRules.Add(docAttr);
            this.treeView.SelectedNode = this.LoadNode(tnParent, docAttr, docAttr.ToString(), false);
            toolStripMenuItemEditRename_Click(this, e);
        }