Asp.net 备份、还原Ms SQLServer及压缩Access数据库

**********************************************************************************


 * 


 * 功能说明:备份和恢复SQL Server数据库


 * 作者: 刘功勋;


 * 版本:V0.1(C#2.0);时间:2007-1-1


 * 当使用SQL Server时,请引用 COM组件中的,SQLDMO.dll组件 


 * 当使用Access中,请浏览添加引用以下两个dll


 *          引用C:Program FilesCommon FilesSystemadomsadox.dll,该DLL包含ADOX命名空间


 *          引用C:Program FilesCommon FilesSystemadomsjro.dll,该DLL包含JRO命名空间


 * *******************************************************************************/


using System;


using System.Data;


using System.Configuration;


using System.Web;


using System.Web.Security;


using System.Web.UI;


using System.Web.UI.WebControls;


using System.Web.UI.WebControls.WebParts;


using System.Web.UI.HtmlControls;


using System.IO;


using ADOX;//该命名空间包含创建ACCESS的类(方法)--解决方案 ==> 引用 ==> 添加引用 ==> 游览找到.dll


using JRO;//该命名空间包含压缩ACCESS的类(方法)




namespace EC


{


    /// <summary>


    /// 数据库恢复和备份


    /// </summary>


    public class SqlBackObject


    {


        public SqlBackObject()


        {


            //


            // TODO: 在此处添加构造函数逻辑


            //


        }




        #region SQL数据库备份


       /// <summary>


        /// SQL数据库备份


       /// </summary>


       /// <param name="ServerIP">SQL服务器IP或(Localhost)</param>


       /// <param name="LoginName">数据库登录名</param>


       /// <param name="LoginPass">数据库登录密码</param>


       /// <param name="DBName">数据库名</param>


       /// <param name="BackPath">备份到的路径</param>


        public static void SQLBACK(string ServerIP,string LoginName,string LoginPass,string DBName,string BackPath)


        {


            SQLDMO.Backup oBackup = new SQLDMO.BackupClass();


            SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();


            try


            {


                oSQLServer.LoginSecure = false;


                oSQLServer.Connect(ServerIP, LoginName, LoginPass);


                oBackup.Database = DBName;


                oBackup.Files = BackPath;


                oBackup.BackupSetName = DBName;


                oBackup.BackupSetDescription = "数据库备份";


                oBackup.Initialize = true;


                oBackup.SQLBackup(oSQLServer);




            }


            catch (Exception e)


            {


                throw new Exception(e.ToString());


            }


            finally


            {


                oSQLServer.DisConnect();


            }


        }


        #endregion




        #region SQL恢复数据库


        /// <summary>


        /// SQL恢复数据库


        /// </summary>


        /// <param name="ServerIP">SQL服务器IP或(Localhost)</param>


        /// <param name="LoginName">数据库登录名</param>


        /// <param name="LoginPass">数据库登录密码</param>


        /// <param name="DBName">要还原的数据库名</param>


        /// <param name="BackPath">数据库备份的路径</param>




        public static void SQLDbRestore(string ServerIP,string LoginName,string LoginPass,string DBName,string BackPath)


        {


           


            SQLDMO.Restore orestore = new SQLDMO.RestoreClass();


            SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();


            try


            {


                oSQLServer.LoginSecure = false;


                oSQLServer.Connect(ServerIP, LoginName, LoginPass);


                orestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;


                orestore.Database = DBName;


                orestore.Files = BackPath;


                orestore.FileNumber = 1;


                orestore.ReplaceDatabase = true;


                orestore.SQLRestore(oSQLServer);




            }


            catch (Exception e)


            {


                throw new Exception(e.ToString());


            }


            finally


            {


                oSQLServer.DisConnect();


            }


        }






        #endregion




        #region 根据指定的文件名称创建Access数据库


        /// <summary>


        /// 根据指定的文件名称创建数据


        /// </summary>


        /// <param name="DBPath">绝对路径+文件名称</param>


        public static void CreateAccess(string DBPath)


        {


            if (File.Exists(DBPath))//检查数据库是否已存在


            {


                throw new Exception("目标数据库已存在,无法创建");


            }           


            DBPath = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+DBPath;


            //创建一个CatalogClass对象实例


            ADOX.CatalogClass cat = new ADOX.CatalogClass();


            //使用CatalogClass对象的Create方法创建ACCESS数据库


            cat.Create(DBPath);




        }


        #endregion




        #region 压缩Access数据库


        /// <summary>


        /// 压缩Access数据库


        /// </summary>


        /// <param name="DBPath">数据库绝对路径</param>


        public static void CompactAccess(string DBPath)


        {


            if (!File.Exists(DBPath))


            {


                throw new Exception("目标数据库不存在,无法压缩");


            }


           


            //声明临时数据库名称


            string temp = DateTime.Now.Year.ToString();


            temp += DateTime.Now.Month.ToString();


            temp += DateTime.Now.Day.ToString();


            temp += DateTime.Now.Hour.ToString();


            temp += DateTime.Now.Minute.ToString();


            temp += DateTime.Now.Second.ToString() + ".bak";


            temp = DBPath.Substring(0, DBPath.LastIndexOf("/") + 1) + temp;


            //定义临时数据库的连接字符串


            string temp2 = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+temp;


            //定义目标数据库的连接字符串


            string DBPath2 = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+DBPath;


            //创建一个JetEngineClass对象的实例


            JRO.JetEngineClass jt = new JRO.JetEngineClass();


            //使用JetEngineClass对象的CompactDatabase方法压缩修复数据库


            jt.CompactDatabase(DBPath2, temp2);


            //拷贝临时数据库到目标数据库(覆盖)


            File.Copy(temp, DBPath, true);


            //最后删除临时数据库


            File.Delete(temp);


        }


        #endregion




        #region 备份Access数据库


        /// <summary>


        /// 备份Access数据库


        /// </summary>


        /// <param name="srcPath">要备份的数据库绝对路径</param>


        /// <param name="aimPath">备份到的数据库绝对路径</param>


        /// <returns></returns>


        public static void Backup(string srcPath,string aimPath)


        {


            


            if (!File.Exists(srcPath))


            {


                throw new Exception("源数据库不存在,无法备份");


            }


            try


            { 


                File.Copy(srcPath,aimPath,true);


            }


            catch(IOException ixp)


            {


                throw new Exception(ixp.ToString());


            }


            


        }




        #endregion




        #region 还原Access数据库


        /// <summary>


        /// 还原Access数据库


        /// </summary>


        /// <param name="bakPath">备份的数据库绝对路径</param>


        /// <param name="dbPath">要还原的数据库绝对路径</param>


        public static void RecoverAccess(string bakPath,string dbPath)


        {           


            if (!File.Exists(bakPath))


            {


                throw new Exception("备份数据库不存在,无法还原");


            }


            try


            {


                File.Copy(bakPath, dbPath, true);


            }


            catch (IOException ixp)


            {


                throw new Exception(ixp.ToString());


            }        


        }        


        #endregion


    }


}