private void MnuFoldersAdd_Click(object sender, EventArgs e)
        {
            var parentNode = tvwFolders.SelectedNode;

            if (parentNode == null)
            {
                return;
            }
            FormTaskFolder frm = new FormTaskFolder
            {
                FolderName = ""
            };
            DialogResult dr = frm.ShowDialog(this);

            if (dr != DialogResult.OK)
            {
                return;
            }
            string     folderName = frm.FolderName;
            TaskFolder taskFolder = Controller.Instance.AddChildFolder(_taskFolder.Id);

            taskFolder.Name = folderName;
            CreateUIFolders(taskFolder, parentNode);
            parentNode.ExpandAll();
        }
        private void MnuFoldersRename_Click(object sender, EventArgs e)
        {
            FormTaskFolder frm = new FormTaskFolder
            {
                FolderName = _taskFolder.Name
            };
            DialogResult dr = frm.ShowDialog(this);

            if (dr != DialogResult.OK)
            {
                return;
            }
            _taskFolder.Name             = frm.FolderName;
            tvwFolders.SelectedNode.Text = _taskFolder.Name;
        }