asp.net恢复数据库

Question

老是报错，提示SQL正在运行
我的代码SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();
        SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
        try
        {
            oSQLServer.LoginSecure = false;
            oSQLServer.Connect("localhost", "sa", "");
            oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
            oRestore.Database = "Northwind";
            oRestore.Files = this.FileUpload1.PostedFile.FileName;
            oRestore.FileNumber = 1;
            oRestore.ReplaceDatabase = true;
            oRestore.SQLRestore(oSQLServer);
            Response.Write("<script language=javascript>alert('恢复数据库成功！');location='Index.aspx'</script>");
        }
        catch
        {
            Response.Write("<script language=javascript>alert('恢复数据库失败！');location='Index.aspx'</script>");
        }
        finally
        {
            oSQLServer.DisConnect();
        }