asp.net下实现数据库的备份与恢复 -优快云博客

本文链接：https://blog.youkuaiyun.com/wyaspnet/article/details/3168058

asp.net下实现数据库的备份与恢复

WebDataBak.aspx.cs

bakServer.cs为自定义类代码

核心代码：

private void BtnDataBackup_Click(object sender, System.EventArgs e)
  {
   if ( lstDb.Items.Count == 0 )
   {
    pub.Alert("数据库列表不能为空！", this.Page);
   }
   else if( txtInFile.Text =="" )
   {
    pub.Alert("备份文件名称不能为空！", this.Page);

   }
   else if( txtDbName.Text =="" || txtUserName.Text == "")
   {
    pub.Alert("数据库，用户不能为空！！",this.Page);

   }
   else
   {
    BtnDataRestore.Enabled = false;
    BtnQuery.Enabled = false;
    btnCear.Enabled = false;
    if ( baks.BackUPDB(lstDb.SelectedItem.ToString(),txtInFile.Text,txtDbName.Text,txtUserName.Text,txtPwd.Text) == true )
    {
     pub.Alert("备份成功！",this.Page);
    }
    else
    {
        pub.Alert("要备份的路径错误不存在,请输入正确路径!！",this.Page);
    }
    BtnDataRestore.Enabled = true;
    BtnQuery.Enabled = true;
    btnCear.Enabled = true;
   }
  }

  private void BtnDataRestore_Click(object sender, System.EventArgs e)
  {
   //恢复数据库
   if ( lstDb.Items.Count == 0 )
   {
    pub.Alert("数据库列表不能为空！", this.Page);
   }
   else if ( txtOutFile.Text =="" )
   {
    pub.Alert("还原文件名称不能为空！", this.Page);

   }
   else if( txtDbName.Text =="" || txtUserName.Text == "")
   {
    pub.Alert("数据库，用户不能为空！！",this.Page);

   }
   else
   {
    BtnDataBackup.Enabled = false;
    BtnQuery.Enabled = false;
    btnCear.Enabled = false;

    if ( baks.RestoreDB(lstDb.SelectedItem.ToString(),txtOutFile.Text,txtDbName.Text,txtUserName.Text,txtPwd.Text) == true )
    {
     pub.Alert("恢复成功！",this.Page);
    }
    else
    {
       pub.Alert("要恢复的数据库文件不存在,请输入正确路径!！",this.Page);
    }
    BtnDataBackup.Enabled = true;
    BtnQuery.Enabled = true;
    btnCear.Enabled = true;
   }
  }

[@more@]

namespace WebSearch
{
///

/*--------------------------------------------------------------------------
系统名称： xxxxx

设计时间：2005-09-03
代码设计者： winzheng
模块名称：   asp.net下sqlserver 2000 数据库备份与还原
模块标识：   DbBAK
--------------------------------------------------------------------------
*/
public class bakServer
{
  string ServerName;   //数据服务器名称
  string UserName;     //用户名称
  string Password;     //用户密码
  string message;      //消息提示

  public bakServer()
  {
   //
   // TODO: 在此处添加构造函数逻辑
   //
  }
  ///

  /// 取得数据库服务器列表
  ///
  /// 数据库服务器列表
  public ArrayList GetServerList()
  {
      ArrayList alServers = new ArrayList() ;
   SQLDMO.ApplicationClass sqlApp = new SQLDMO.ApplicationClass();
   try
   {
    SQLDMO.NameList serverList = sqlApp.ListAvailableSQLServers() ;
    if(serverList !=null)
    {
     for(int i = 1;i<= serverList.Count;i++)
     {
      alServers.Add(serverList.Item(i)) ;
     }
    }
    else
    {
       message="你的系统需要打上SQL SERVER 2000 SP3这个补丁";
    }
   }
   catch(Exception e)
   {

message = "取数据库服务器列表出错：" +e.Message;

   }
   finally
   {
    sqlApp.Quit() ;
   }
   return alServers ;
  }
  ///

  /// 错误消息处理
  ///
  /// 消息信息
  public string Msg()
  {
   return message;
  }
  ///

  /// 取得指定数据库列表
  ///
  /// 服务器名称
  /// 用户名称
  /// 用户密码
  /// 数据库列表
  public ArrayList GetDbList(string strServerName,string strUserName,string strPwd)
  {
   ServerName = strServerName ;
   UserName = strUserName ;
   Password = strPwd ;

   ArrayList alDbs = new ArrayList() ;
   SQLDMO.ApplicationClass sqlApp = new SQLDMO.ApplicationClass() ;
   SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;
   try
   {
    svr.Connect(ServerName,UserName,Password) ;
    foreach(SQLDMO.Database db in svr.Databases)
    {
     if(db.Name!=null)
      alDbs.Add(db.Name) ;
    }
   }
   catch(Exception err)
   {
    //    throw(new Exception("连接数据库出错："+e.Message)) ;
    message = "连接数据库出错：" +err.Message;
   }
   finally
   {
    svr.DisConnect() ;
    sqlApp.Quit() ;
   }
   return alDbs ;
  }
  ///
  /// 数据库名称
  /// 备份文件名
  /// 服务器名称
  /// 用户名称
  /// 密码
  /// 备份成功返回true ，否则返回false
  public bool BackUPDB(string strDbName,string strFileName, string strServerName,string strUserName,string strPwd)
  {
   ServerName = strServerName ;
   UserName = strUserName ;
   Password = strPwd ;
   SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;
   try
   {
    svr.Connect(ServerName,UserName,Password) ;
    SQLDMO.Backup bak = new SQLDMO.BackupClass();
    bak.Action = 0 ;
    bak.Initialize = true ;
    SQLDMO.BackupSink_PercentCompleteEventHandler pceh = new SQLDMO.BackupSink_PercentCompleteEventHandler(Step);
    bak.PercentComplete += pceh;
    bak.Files = strFileName;
    bak.Database = strDbName;
    bak.SQLBackup(svr);
    return true ;
   }
   catch(Exception err)
   {
    //    throw(new Exception("备份数据库失败"+err.Message)) ;
    message = "备份数据库失败：" +err.Message;
    return false ;
   }
   finally
   {
    svr.DisConnect() ;
   }
  }

  /// 备份文件名
  /// 状态条控件名称
  /// 服务器名称
  /// 用户名称
  /// 密码
  /// 恢复成功返回true ，否则返回false
  public bool RestoreDB(string strDbName,string strFileName,string strServerName,string strUserName,string strPwd )
  {
   SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;
   try
   {
    ServerName = strServerName ;
    UserName = strUserName ;
    Password = strPwd ;

    svr.Connect(ServerName,UserName,Password) ;
    SQLDMO.QueryResults qr = svr.EnumProcesses(-1) ;
    int iColPIDNum = -1 ;
    int iColDbName = -1 ;
    for(int i=1;i<=qr.Columns;i++)
    {
     string strName = qr.get_ColumnName(i) ;
     if (strName.ToUpper().Trim() == "SPID")
     {
      iColPIDNum = i ;
     }
     else if (strName.ToUpper().Trim() == "DBNAME")
     {
      iColDbName = i ;
     }
     if (iColPIDNum != -1 && iColDbName != -1)
      break ;
    }

    for(int i=1;i<=qr.Rows;i++)
    {
     int lPID = qr.GetColumnLong(i,iColPIDNum) ;
     string strDBName = qr.GetColumnString(i,iColDbName) ;
     if (strDBName.ToUpper() == strDbName.ToUpper())
      svr.KillProcess(lPID) ;
    }

    SQLDMO.Restore res = new SQLDMO.RestoreClass() ;
    res.Action = 0 ;
    SQLDMO.RestoreSink_PercentCompleteEventHandler pceh = new SQLDMO.RestoreSink_PercentCompleteEventHandler(Step);
    res.PercentComplete += pceh;
    res.Files = strFileName ;

    res.Database = strDbName ;
    res.ReplaceDatabase = true ;
    res.SQLRestore(svr) ;
    return true ;
   }
   catch(Exception err)
   {

    message = "恢复数据库失败,请关闭所有和该数据库连接的程序！" +err.Message;
    return false;
   }
   finally
   {
    svr.DisConnect() ;
   }
  }

}
}