DevExpress MemoEdit

        /// <summary>
        /// 像下载日志中添加记录
        /// </summary>
        /// <param name="msg"></param>
        private void AppendLog(string msg)
        {
            txtLog.BeginInvoke(new Action(() =>
            {
                //txtLog.Properties..AppendText(msg + Environment.NewLine);
                AppendTextToMemoEdit(txtLog, msg);
            }));

        }
        /// <summary>
        /// 追加文本到MemoEdit中
        /// </summary>
        /// <param name="memoEdit"></param>
        /// <param name="strText"></param>
        public static void AppendTextToMemoEdit(MemoEdit memoEdit, string strText)
        {
            try
            {
                memoEdit.Text = memoEdit.Text + "\r\n" + strText;
                memoEdit.SelectionStart = memoEdit.Text.Length;
                memoEdit.ScrollToCaret();
                Application.DoEvents();
            }
            catch
            {
                return;
            }
        }