protected virtual void Dispose(bool disposing)
        {
            if (!m_disposed)
            {
                if (disposing)
                {
                    // 释放托管代码
                    if (DBTrans != null)
                    {
                        DBTrans.Dispose();
                        DBTrans = null;
                    }
                    if (DBConn != null)
                    {
                        if (DBConn.State == ConnectionState.Open)
                        {
                            DBConn.Close();
                        }
                        DBConn.Dispose();
                        DBConn = null;
                    }
                }

                //释放非托管代码

                m_disposed = true;
            }
        }
        /// <summary>
        /// 提交数据库操作
        /// </summary>
        protected void Commit()
        {
            if (this.DBTrans != null)
            {
                DBTrans.Commit();
                DBTrans.Dispose();
                DBTrans = null;
            }
            if (DBConn.State == ConnectionState.Open)
            {
                DBConn.Close();
            }

            DBConn.Dispose();
            DBConn = null;
        }