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('''[email protected]+''')'
exec (@sql)
open getspid
fetch next from getspid into @spid
while @@fetch_status<>-1
begin
exec('kill '[email protected])
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();
}
}
}
}
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