private Hashtable htInit = new Hashtable();

        /// <summary>
        /// 将界面上TextBox的初始值记录到Hashtable中
        /// </summary>
        private void InitControlTextToHashtable()
        {
            foreach (var c in this.Controls)
            {
                if (c.GetType() == typeof(TextBox))
                {
                    TextBox tb = c as TextBox;
                    htInit.Add(tb.Name, tb.Text);
                }
            }
        }

        /// <summary>
        /// 验证TextBox控件的值是否变化
        /// </summary>
        /// <returns></returns>
        private bool ValidateTextValueChanged()
        {
            foreach (string name in htInit.Keys)
            {
                TextBox tb = this.Controls[name] as TextBox;
                if (tb.Text != htInit[name].ToString())
                {
                    return false;
                }
            }
            return true;
        }