系统管理程序中如何备份数据库、还原数据库[代码]

namespace BLL

{

    public class SystemManager

    {

        private DAL.SystemService service = new DAL.SystemService();



        /// <summary>

        /// 备份数据库

        /// </summary>

        /// <param name="path"></param>

        /// <returns></returns>

        public string DataSoureBack(string path,string oName)

        {

            string demo = service.DataSoureBack(path);

            MODEL.BackMsg model= new MODEL.BackMsg { 

                BackPath=path,

                Operated=oName,

            };

            if (string.IsNullOrEmpty(demo) || demo == "success")

            {

                model.OperatedResult = "成功";

                model.ReasonsFailure = "";

            }

            else

            {

                model.OperatedResult = "失败";

                model.ReasonsFailure = demo;

            }

            new BLL.BackMsgManager().AddBackMsg(model);

            return demo;

        }



        /// <summary>

        /// 还原数据库

        /// </summary>

        /// <param name="path"></param>

        /// <returns></returns>

        public string RestoreData(string path)

        {

            return service.RestoreData(path);

        }

    }

}

namespace DAL

{

    public class SystemService

    {

        public string DataSoureBack(string path)

        {

            string result = string.Empty;

            SqlConnection conn = new SqlConnection("Server=.;Database=master;User ID=sa;Password=Dhcs)_+;");

            SqlCommand cmdBK = new SqlCommand();

            cmdBK.CommandType = CommandType.Text;

            cmdBK.Connection = conn;

            cmdBK.CommandText = @"backup database lnsmB2B to disk='" + path + "' with init";

            try

            {

                conn.Open();

                cmdBK.ExecuteNonQuery();

                result = "success";

            }

            catch (Exception ex)

            {

                result = ex.Message;

            }

            finally

            {

                conn.Close();

                conn.Dispose();

            }

            

            return result;

        }



        public string RestoreData(string path) 

        {

            string temp = string.Empty;

            SqlConnection conn = new SqlConnection("Server=.;Database=master;User ID=sa;Password=Dhcs)_+;Trusted_Connection=False");

            conn.Open();

            //KILL DataBase Process

            SqlCommand cmd = new SqlCommand("SELECT spid FROM sysprocesses ,sysdatabases WHERE sysprocesses.dbid=sysdatabases.dbid AND sysdatabases.Name='lnsmB2B'", conn);

            SqlDataReader dr;

            dr = cmd.ExecuteReader();

            ArrayList list = new ArrayList();

            while (dr.Read())

            {

                list.Add(dr.GetInt16(0));

            }

            dr.Close();

            for (int i = 0; i < list.Count; i++)

            {

                cmd = new SqlCommand(string.Format("KILL {0}", list[i]), conn);

                cmd.ExecuteNonQuery();

            }

            SqlCommand cmdRT = new SqlCommand();

            cmdRT.CommandType = CommandType.Text;

            cmdRT.Connection = conn;

            cmdRT.CommandText = @"restore database lnsmB2B from disk='" + path + "'";

            try

            {

                cmdRT.ExecuteNonQuery();

                temp = "success";

            }

            catch (Exception ex)

            {

                temp = ex.Message;

            }

            finally

            {

                conn.Close();

            }

            return temp;

        }

    }

}

namespace BLL

{

    public class BackMsgManager

    {

        private DAL.BackMsgService service = new DAL.BackMsgService();



        /// <summary>

        /// 返回所有的数据备份记录

        /// </summary>

        /// <returns></returns>

        public IList<MODEL.BackMsg> GetBackMsg()

        {

            return service.GetBackMsg();

        }



        /// <summary>

        /// 添加一条新的数据备份记录

        /// </summary>

        /// <param name="model"></param>

        /// <returns></returns>

        public bool AddBackMsg(MODEL.BackMsg model)

        {

            return service.AddBackMsg(model);

        }



        /// <summary>

        /// 删除指定ＩＤ的数据备份记录

        /// </summary>

        /// <param name="id"></param>

        /// <returns></returns>

        public bool DeleteBackMsg(string id)

        {

            return service.DeleteBackMsg(id);

        }

    }

}

/// <summary>
        /// 获取网站数据备份路径
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public static string DataSoureBackPath()
        {
            return HttpContext.Current.Server.MapPath("~/" + ConfigurationSettings.AppSettings["DataBackUrl"] + DateTime.Now.ToString("yyyyMMddhhmmss") + "lnsmB2B.bak");
        }

然后再 web.config里配置保存的路径

 

<appSettings>
        <!-- 数据库备份路径 -->
        <add key="DataBackUrl" value="admin/dataBack/" />
</appSettings>