asp.net备份还原数据库

到网上找了一下，是利用SQLDMO实现的，只要添加SQLDMO引用就好了，然后利用下边的类的方法就可以实现了。

我把原作者的类扩充了一下，可以自动识别web.config里的数据库连接字符串，可以通过变量设置还原恢复的信息。

需要注意的时还原，还原的时候问题最大了，有别的用户使用数据库的时候无法还原，解决办法就是在MASTER数据库中添加一个存储过程：

create proc killspid (@dbnamevarchar(20))asbegindeclare @sql nvarchar(500)declare @spid intset @sql='declare getspidcursor for select spid from sysprocesseswhere dbid=db_id('''+@dbname+''')'exec (@sql)open getspidfetch next from getspid into@spidwhile@@fetch_status<>-1beginexec('kill '+@spid)fetch next from getspid into@spidendclose getspiddeallocate getspidendGO

 

 

在还原之前先执行这个存储过程，需要传递dbname，就是你的数据库的名字。下边是类的原代码：（web.config里的数据库连接字符串是constr）

 

using System; using System.Configuration; using System.Data.SqlClient; using System.Data; namespace web.base_class { /// <summary> /// DbOper类,主要应用SQLDMO实现对MicrosoftSQL Server数据库的备份和恢复 /// </summary> public class DbOper { private string server; private string uid; private string pwd; private string database; private string conn; /// <summary> /// DbOper类的构造函数 /// </summary> public DbOper() { conn=System.Configuration.ConfigurationSettings.AppSettings["constr"].ToString(); server=cut(conn,"server=",";"); uid=cut(conn,"uid=",";"); pwd=cut(conn,"pwd=",";"); database=cut(conn,"database=",";"); } public string cut(stringstr,string bg,string ed) { string sub; sub=str.Substring(str.IndexOf(bg)+bg.Length); sub=sub.Substring(0,sub.IndexOf(";")); return sub; }   /// <summary> /// 数据库备份 /// </summary> public bool DbBackup(stringurl) { SQLDMO.Backup oBackup = newSQLDMO.BackupClass(); SQLDMO.SQLServer oSQLServer =new SQLDMO.SQLServerClass(); try { oSQLServer.LoginSecure =false; oSQLServer.Connect(server,uid,pwd); oBackup.Action =SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database; oBackup.Database = database; oBackup.Files =url;//"d:\Northwind.bak"; oBackup.BackupSetName =database; oBackup.BackupSetDescription= "数据库备份"; oBackup.Initialize = true; oBackup.SQLBackup(oSQLServer); return true; } catch { return false; throw; } finally { oSQLServer.DisConnect(); } }   /// <summary> /// 数据库恢复 /// </summary> public stringDbRestore(string url) { if(exepro()!=true)//执行存储过程 { return "操作失败"; } else { SQLDMO.Restore orestore = newSQLDMO.RestoreClass(); SQLDMO.SQLServer oSQLServer =new SQLDMO.SQLServerClass(); try { oSQLServer.LoginSecure =false; oSQLServer.Connect(server,uid, pwd); orestore.Action =SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database; orestore.Database = database; orestore.Files =url;//@"d:\Northwind.bak"; orestore.FileNumber = 1; orestore.ReplaceDatabase =true; orestore.SQLRestore(oSQLServer); return "ok"; } catch(Exception e) { return "恢复数据库失败"; throw; } finally { oSQLServer.DisConnect(); } } } private bool exepro() { SqlConnection conn1 = newSqlConnection("server="+server+";uid="+uid+";pwd="+pwd+";database=master"); SqlCommand cmd = newSqlCommand("killspid",conn1); cmd.CommandType =CommandType.StoredProcedure; cmd.Parameters.Add("@dbname","port"); try { conn1.Open(); cmd.ExecuteNonQuery(); return true; } catch(Exception ex) { return false; } finally { conn1.Close(); }   } } }

 

 

源文档 <http://www.cnblogs.com/zgqys1980/archive/2008/09/25/1298787.html>