用asp.net还原与恢复sqlserver数据库

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();
}
}
}
}