private void undoCheckOutToolStripMenuItem_Click(object sender, EventArgs e)
        {
            EUListItem   listItem = (EUListItem)LibraryContentDataGridView.SelectedRows[0].Tag;
            DialogResult result   = MessageBox.Show("Are you sure you would like to undo " + listItem.Title + "?", "", MessageBoxButtons.YesNo);

            if (result == DialogResult.No)
            {
                return;
            }
            SharePointManager.UndoCheckOutFile(listItem.SiteSetting, listItem.WebURL, listItem.URL);
            RefreshViewExt();
        }