FileStream fs = new FileStream("D:\\TestXml\\TestXml\\rocid.xml",FileMode.Open,FileAccess.Read,FileShare.Read);
            XmlDocument XmlDoc = new XmlDocument();
            XmlDoc.Load(fs);
            ArrayList Country = new ArrayList();
            string temp = "";
            string temp1 = "";
            for (int i = 0; i < XmlDoc.DocumentElement.ChildNodes.Count; i++)
            {

                if (XmlDoc.DocumentElement.ChildNodes[i].Name.ToString() == "country")
                {
                    //temp1 = XmlDoc.DocumentElement.ChildNodes[i].InnerText;
                    
                }

                XmlDoc.DocumentElement.GetElementsByTagName("country")[i].InnerText;
            }
            
            fs.Close();

<?xml version="1.0" encoding="windows-1251" ?>
<rocid>
  <!-- таблица  city -->
    <city>
        <city_id>4400</city_id>
        <country_id>3159</country_id>
        <region_id>4312</region_id>
        <name>Москва</name>
    </city>
    <city>
        <city_id>4313</city_id>
        <country_id>3159</country_id>
        <region_id>4312</region_id>
        <name>Абрамцево</name>
    </city>
    <city>
        <city_id>4314</city_id>
        <country_id>3159</country_id>
        <region_id>4312</region_id>
        <name>Алабино</name>
    </city>

<country>
        <country_id>3159</country_id>
        <city_id>0</city_id>
        <name>Россия</name>
    </country>
    <country>
        <country_id>4</country_id>
        <city_id>0</city_id>
        <name>Австралия</name>
    </country>
    <country>
        <country_id>63</country_id>
        <city_id>0</city_id>
        <name>Австрия</name>
    </country>
 <region>
        <region_id>11354</region_id>
        <country_id>11060</country_id>
        <city_id>0</city_id>
        <name>Ямагути</name>
    </region>
    <region>
        <region_id>11363</region_id>
        <country_id>11060</country_id>
        <city_id>0</city_id>
        <name>Яманаси</name>
    </region>
</rocid>