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 (@dbname varchar(20))
as
begin
declare @sql nvarchar(500)
declare @spid
int
set @sql='declare getspid cursor for
select spid from sysprocesses where dbid=db_id('''+@dbname+''')'
exec (@sql)
open getspid
fetch next from getspid into @spid
while @@fetch_status<>-1
begin
exec('kill '+@spid)
fetch next from getspid into @spid
end
close getspid
deallocate getspid
end
GO
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Microsoft SQL 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(string str,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(string url) { SQLDMO.Backup oBackup = new SQLDMO.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 string DbRestore(string url) { if(exepro()!=true)//执行存储过程 { return "操作失败"; } else { SQLDMO.Restore oRestore = new SQLDMO.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 = new SqlConnection("server="+server+";uid="+uid+";pwd="+pwd+";database=master"); SqlCommand cmd = new SqlCommand("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(); } } }
}
本文转自高海东博客园博客，原文链接http://www.cnblogs.com/ghd258/archive/2006/02/28/339458.html，如需转载请自行联系原作者
