标签：des style blog class code java
【转载】http://www.codesky.net/article/200908/128600.html
C#数据库备份及还原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：
public ArrayList GetServerList() { ArrayList alServers = new ArrayList() ; SQLDMO.Application sqlApp = new SQLDMO.ApplicationClass() ; try { SQLDMO.NameList serverList = sqlApp.ListAvailableSQLServers() ; for(int i = 1;i<= serverList.Count;i++) { alServers.Add(serverList.Item(i)) ; } } catch(Exception e) { throw(new Exception("取数据库服务器列表出错："+e.Message)) ; } finally { sqlApp.Quit() ; } return alServers ; }
取得指定数据库服务器的数据库列表
public ArrayList GetDbList(string strServerName,string strUserName,string strPwd) { ServerName = strServerName ; UserName = strUserName ; Password = strPwd ; ArrayList alDbs = new ArrayList() ; SQLDMO.Application 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 e) { throw(new Exception("连接数据库出错："+e.Message)) ; } finally { svr.DisConnect() ; sqlApp.Quit() ; } return alDbs ; }
C#数据库备份及还原2．数据库的备份和实时进度显示代码：
public bool BackUPDB(string strDbName,string strFileName, ProgressBar pgbMain) { PBar = pgbMain ; 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)) ; } finally { svr.DisConnect() ; } } private void Step(string message,int percent) { PBar.Value = percent ; }
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。
C#数据库备份及还原3．数据库的恢复和杀死进程的代码：
public bool RestoreDB(string strDbName,string strFileName, ProgressBar pgbMain) { PBar = pgbMain ; SQLDMO.SQLServer svr = new SQLDMO.SQLServerClass() ; try { 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) { 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)) ; } finally { svr.DisConnect() ; } }
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：
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) ; }
C#数据库备份及还原的实现代码【转载】,布布扣,bubuko.com
标签：des style blog class code java
原文地址：http://www.cnblogs.com/mzy-google/p/3715979.html
