リーフ ノードのテキストに表示されるキーワードのみを検索する場合は、次の手順を試してください (このサンプルのbooks.xmlを使用)。
string keyword = "com";
var doc = XDocument.Load("books.xml");
var query = doc.Descendants()
.Where(x => !x.HasElements &&
x.Value.IndexOf(keyword, StringComparison.InvariantCultureIgnoreCase) >= 0);
foreach (var element in query)
Console.WriteLine(element);
出力:
<genre>Computer</genre>
<description>A former architect battles corporate zombies,
an evil sorceress, and her own childhood to become queen
of the world.</description>
<genre>Computer</genre>
<title>MSXML3: A Comprehensive Guide</title>
<genre>Computer</genre>
<title>Visual Studio 7: A Comprehensive Guide</title>
<genre>Computer</genre>
<description>Microsoft Visual Studio 7 is explored in depth,
looking at how Visual Basic, Visual C++, C#, and ASP+ are
integrated into a comprehensive development
environment.</description>