using System;

using System.Linq;

using System.Xml.Linq;

​

public static class Program

{

    public static void Main(string[] args)

    {

        const string xml = @"<recordset>

    <itemidlist>

        <itemid idtype = ""plant"">787484545</itemid>

        <itemid idtype = ""seed"">659988222</itemid>

    </itemidlist>

    <itemidlist>

        <itemid idtype = ""plant"">90327328</itemid>

        <itemid idtype = ""seed"">099849999</itemid>

    </itemidlist>

    <itemidlist>

        <itemid idtype = ""plant"">34545488</itemid>

        <itemid idtype = ""seed"">787555444</itemid>

    </itemidlist>

</recordset>";

​

        var doc = XDocument.Parse(xml);

​

        var plants = doc.Descendants("itemid")

            .Where(x => (string) x.Attribute("idtype") == "plant")

            .Select(x => x.Value);

​

        Console.WriteLine("Plants:\n" + string.Join("\n", plants));

​

        var seeds = doc.Descendants("itemid")

            .Where(x => (string) x.Attribute("idtype") == "seed")

            .Select(x => x.Value);

​

        Console.WriteLine("Seeds:\n" + string.Join("\n", seeds));

    }

}

​

​

​