使用前要导入SQLDMO.dll
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1.在用户的配置时,我们需要列出当前局域网内所有的数据库服务器,并且要列出指定服务器的所有数据库,实现代码如下:
取得数据库服务器列表:
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public ArrayList GetServerList()
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{
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ArrayList alServers = new ArrayList() ;
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SQLDMO.Application sqlApp = new SQLDMO.ApplicationClass() ;
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try
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{
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SQLDMO.NameList serverList = sqlApp.ListAvailableSQLServers() ;
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for(int i = 1;i<= serverList.Count;i++)
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{
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alServers.Add(serverList.Item(i)) ;
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}
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}
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catch(Exception e)
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{
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throw(new Exception("取数据库服务器列表出错:"+e.Message)) ;
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}
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finally
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{
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sqlApp.Quit() ;
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}
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return alServers ;
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}
取得指定数据库服务器的数据库列表
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public ArrayList GetDbList(string strServerName,string strUserName,string strPwd)
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{
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ServerName = strServerName ;
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UserName = strUserName ;
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Password = strPwd ;
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ArrayList alDbs = new ArrayList() ;
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SQLDMO.Application sqlApp = new SQLDMO.ApplicationClass() ;
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SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;
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try
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{
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svr.Connect(ServerName,UserName,Password) ;
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foreach(SQLDMO.Database db in svr.Databases)
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{
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if(db.Name!=null)
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alDbs.Add(db.Name) ;
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}
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}
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catch(Exception e)
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{
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throw(new Exception("连接数据库出错:"+e.Message)) ;
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}
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finally
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{
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svr.DisConnect() ;
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sqlApp.Quit() ;
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}
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return alDbs ;
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}
2.数据库的备份和实时进度显示代码:
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public bool BackUPDB(string strDbName,string strFileName, ProgressBar pgbMain)
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{
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PBar = pgbMain ;
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SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;
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try
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{
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svr.Connect(ServerName,UserName,Password) ;
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SQLDMO.Backup bak = new SQLDMO.BackupClass();
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bak.Action = 0 ;
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bak.Initialize = true ;
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SQLDMO.BackupSink_PercentCompleteEventHandler pceh =
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new SQLDMO.BackupSink_PercentCompleteEventHandler(Step);
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bak.PercentComplete += pceh;
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bak.Files = strFileName;
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bak.Database = strDbName;
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bak.SQLBackup(svr);
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return true ;
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}
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catch(Exception err)
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{
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throw(new Exception("备份数据库失败"+err.Message)) ;
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}
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finally
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{
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svr.DisConnect() ;
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}
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}
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private void Step(string message,int percent)
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{
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PBar.Value = percent ;
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}
其中,这两个语句实现了进度的实时显示:
SQLDMO.BackupSink_PercentCompleteEventHandler pceh = new SQLDMO.BackupSink_PercentCompleteEventHandler(Step);
bak.PercentComplete += pceh;
Step就是上面private void Step(string message,int percent) 的方法名称,它用来显示进度条的当前进度。
3.数据库的恢复和杀死进程的代码:
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public bool RestoreDB(string strDbName,string strFileName, ProgressBar pgbMain)
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{
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PBar = pgbMain ;
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SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ;
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try
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{
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svr.Connect(ServerName,UserName,Password) ;
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SQLDMO.QueryResults qr = svr.EnumProcesses(-1) ;
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int iColPIDNum = -1 ;
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int iColDbName = -1 ;
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for(int i=1;i<=qr.Columns;i++)
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{
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string strName = qr.get_ColumnName(i) ;
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if (strName.ToUpper().Trim() == "SPID")
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{
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iColPIDNum = i ;
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}
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else if (strName.ToUpper().Trim() == "DBNAME")
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{
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iColDbName = i ;
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}
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if (iColPIDNum != -1 && iColDbName != -1)
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break ;
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}
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for(int i=1;i<=qr.Rows;i++)
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{
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int lPID = qr.GetColumnLong(i,iColPIDNum) ;
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string strDBName = qr.GetColumnString(i,iColDbName) ;
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if (strDBName.ToUpper() == strDbName.ToUpper())
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svr.KillProcess(lPID) ;
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}
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SQLDMO.Restore res = new SQLDMO.RestoreClass() ;
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res.Action = 0 ;
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SQLDMO.RestoreSink_PercentCompleteEventHandler pceh =
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new SQLDMO.RestoreSink_PercentCompleteEventHandler(Step);
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res.PercentComplete += pceh;
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res.Files = strFileName ;
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res.Database = strDbName ;
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res.ReplaceDatabase = true ;
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res.SQLRestore(svr) ;
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return true ;
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}
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catch(Exception err)
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{
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throw(new Exception("恢复数据库失败,请关闭所有和该数据库连接的程序!"+err.Message)) ;
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}
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finally
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{
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svr.DisConnect() ;
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}
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}
其中这个语句取得了所有的进程列表:
SQLDMO.QueryResults qr = svr.EnumProcesses(-1) ;
下面的语句找到和要恢复数据库相关的进程并杀死:
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int iColPIDNum = -1 ;
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int iColDbName = -1 ;
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for(int i=1;i<=qr.Columns;i++)
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{
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string strName = qr.get_ColumnName(i) ;
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if (strName.ToUpper().Trim() == "SPID")
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{
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iColPIDNum = i ;
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}
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else if (strName.ToUpper().Trim() == "DBNAME")
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{
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iColDbName = i ;
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}
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if (iColPIDNum != -1 && iColDbName != -1)
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break ;
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}
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for(int i=1;i<=qr.Rows;i++)
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{
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int lPID = qr.GetColumnLong(i,iColPIDNum) ;
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string strDBName = qr.GetColumnString(i,iColDbName) ;
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if (strDBName.ToUpper() == strDbName.ToUpper())
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svr.KillProcess(lPID) ;
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}