怎样做sql server数据库的复原[MSSQL防范]

在网上搜索了找到了小白的Blog上转了一个大大亨论坛上的谈论,看了谈论后发现里面供应的办法还不能直接用于ASP.NET.我对代码举行了稍稍的窜改

???void restoreButton_Click(object sender, System.EventArgs e)
???{
????string path = pathTextBox.Text;
????string dbname = dbDropDownList.SelectedValue;

????string restoreSql = "use master;";
????restoreSql += "restore database @dbname from disk = @path;";
??????????????? string pai = "use master;ALTER DATABASE Wy SET OFFLINE WITH ROLLBACK IMMEDIATE;ALTER DATABASE Wy SET ONLINE WITH ROLLBACK IMMEDIATE";
??????????????? SqlConnection conn = new SqlConnection(ConnStr);
??????????????? SqlCommand com1 = new SqlCommand(pai, conn);

????SqlCommand myCommand = new SqlCommand(restoreSql, new SqlConnection(ConnStr));

????myCommand.Parameters.Add("@dbname", SqlDbType.Char);
????myCommand.Parameters["@dbname"].Value = dbname;
????myCommand.Parameters.Add("@path", SqlDbType.Char);
????myCommand.Parameters["@path"].Value = path;

????try
????{
??????????????????? conn.Open();
??????????????????? com1.ExecuteNonQuery();
??????????????????? conn.Close();
??????????????????? myCommand.Connection.Open();
?????myCommand.ExecuteNonQuery();
??????????????????? infoLabel.Text = "恢复成功!
已经把备份"+path+"恢复到数据库";

????}
????catch(Exception ex)
????{
??????????????????? infoLabel.Text = "恢复失利!
出错信息以下:
" + ex.ToString();
????}
????finally
????{
?????myCommand.Connection.Close();

????}
???}