{"id":3628,"date":"2012-08-09T12:58:21","date_gmt":"2012-08-09T03:58:21","guid":{"rendered":"http:\/\/www.moonmile.net\/blog\/archives\/3628"},"modified":"2012-08-10T07:13:38","modified_gmt":"2012-08-09T22:13:38","slug":"c-xelement-%e3%81%a8%e3%81%af%e9%81%95%e3%81%86-linq-%e3%81%a7%e3%81%8d%e3%82%8b-xmlnode-%e3%82%92%e4%bd%9c%e6%88%90%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"http:\/\/www.moonmile.net\/blog\/archives\/3628","title":{"rendered":"[C#] XElement \u3068\u306f\u9055\u3046 LINQ \u3067\u304d\u308b XmlNode \u3092\u4f5c\u6210\u3059\u308b"},"content":{"rendered":"

\n\u6628\u65e5\u306e\u7d9a\u304d\u3067\u3001XmlNode \u306b navigator \u306e\u6a5f\u80fd\u3092\u4ed8\u3051\u3066\u307f\u307e\u3059\u3002
\nxml \u306b\u95a2\u3059\u308b\u30ca\u30d3\u30b2\u30fc\u30bf\u306f\u3001\u65e2\u306b XPathNavigator \u30af\u30e9\u30b9\u304c\u3042\u3063\u3066\u3001XPATH \u306e\u8a18\u6cd5\u3092\u4f7f\u3063\u3066 XML \u306e\u30c4\u30ea\u30fc\u69cb\u9020\u3092\u63a2\u7d22\u3067\u304d\u308b\u306e\u3067\u3059\u304c…\u5f53\u305f\u308a\u524d\u306a\u306e\u3067\u3059\u304c\u300cXPATH\u3092\u4f7f\u308f\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u300d\u3068\u3044\u3046\u5236\u7d04\u304c\u3042\u308a\u307e\u3059\u3002\n<\/p>\n

\nXPathNavigator \u30af\u30e9\u30b9 (System.Xml.XPath)
\nhttp:\/\/msdn.microsoft.com\/ja-jp\/library\/system.xml.xpath.xpathnavigator(v=vs.110).aspx<\/a>\n<\/p>\n

\n\u307e\u3042\u3001xpath \u3067\u7d30\u3005\u3068\u66f8\u308c\u3070\u3044\u3044\u3093\u3060\u3051\u3069\u3001\u3082\u3063\u3068\u5927\u96d1\u628a\u306b C# \u306e\u6587\u6cd5\u306b\u8fd1\u304f\u3001\u3068\u3044\u3046\u304b LINQ \u8fd1\u3044\u5f62\u3067\u63a2\u7d22\u304c\u3057\u305f\u3044\u306a\u3041\u3068\u601d\u3063\u305f…\u3068\u3044\u3046\u306e\u306f\u5618\u3067\u3001\u6210\u308a\u884c\u304d\u4e0a\u3053\u3046\u306a\u308a\u307e\u3057\u305f\u3063\u3066\u611f\u3058\u3067\u3059\u3002HTML \u306e\u63a2\u7d22\u65b9\u6cd5\u3092\u8272\u3005\u6a21\u7d22\u3057\u3066\u3044\u3063\u305f\u3089\u3001LINQ \u306e Where \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\uff08IEnumable<> \u3092\u4f7f\u3046\uff09\u307b\u3046\u304c\u4e00\u756a\u59a5\u5f53\u304b\u3068\u3044\u3046\u30d1\u30bf\u30fc\u30f3\u306a\u306e\u3067\u3059\u3002\n<\/p>\n

\n\u25a0IEnumable<>\u90e8\u5206\u3092 HtmlDoc \u304b\u3089\u30b3\u30d4\u30da\n<\/p>\n

\n\u4ee5\u524d\u4f5c\u3063\u305f\u3068\u3053\u308d\u304b\u3089\u3001\u305d\u306e\u307e\u307e\u30b3\u30d4\u30fc\u3057\u3066\u624b\u76f4\u3057\u3002
\nIEnumerator<XmlNode> \u306e\u3068\u3053\u308d\u306f\u3001\u5185\u90e8\u30af\u30e9\u30b9\u306b\u3057\u3066 XmlNavigator.Enumerator \u306b\u3057\u307e\u3059\u3002\n<\/p>\n

\r\npublic class XmlNavigator : IEnumerable<XmlNode>\r\n{\r\n\tXmlNode _root;\r\n\r\n\tpublic XmlNavigator(XmlNode root)\r\n\t{\r\n\t\t_root = root;\r\n\t}\r\n\r\n\tpublic IEnumerator<XmlNode> GetEnumerator()\r\n\t{\r\n\t\treturn new Enumerator(_root);\r\n\t}\r\n\r\n\tSystem.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()\r\n\t{\r\n\t\treturn new Enumerator(_root);\r\n\t}\r\n\r\n\tprotected class Enumerator : IEnumerator<XmlNode>\r\n\t{\r\n\t\tXmlNode _root;\r\n\t\tXmlNode _cur;\r\n\r\n\t\tpublic Enumerator(XmlNode root)\r\n\t\t{\r\n\t\t\t_root = root;\r\n\t\t\t_cur = null;\r\n\t\t}\r\n\r\n\r\n\t\tpublic XmlNode Current\r\n\t\t{\r\n\t\t\tget { return _cur; }\r\n\t\t}\r\n\r\n\t\tpublic void Dispose()\r\n\t\t{\r\n\t\t}\r\n\r\n\t\tobject System.Collections.IEnumerator.Current\r\n\t\t{\r\n\t\t\tget { return _cur; }\r\n\t\t}\r\n\r\n\t\tpublic bool MoveNext()\r\n\t\t{\r\n\t\t\tif (_cur == null)\r\n\t\t\t{\r\n\t\t\t\t_cur = _root;\r\n\t\t\t\treturn true;\r\n\t\t\t}\r\n\t\t\tif (_cur.Children.Count > 0)\r\n\t\t\t{\r\n\t\t\t\t_cur = _cur.Children[0];\r\n\t\t\t\treturn true;\r\n\t\t\t}\r\n\t\t\tif (_cur.NextSubling != null)\r\n\t\t\t{\r\n\t\t\t\t_cur = _cur.NextSubling;\r\n\t\t\t\treturn true;\r\n\t\t\t}\r\n\t\t\tXmlNode cur = _cur;\r\n\t\t\twhile (true)\r\n\t\t\t{\r\n\t\t\t\tXmlNode pa1 = cur.Parent;\r\n\t\t\t\tif (pa1 == null)\r\n\t\t\t\t{\r\n\t\t\t\t\t_cur = null;\r\n\t\t\t\t\treturn false;\r\n\t\t\t\t}\r\n\t\t\t\tif (pa1.NextSubling != null)\r\n\t\t\t\t{\r\n\t\t\t\t\t_cur = pa1.NextSubling;\r\n\t\t\t\t\treturn true;\r\n\t\t\t\t}\r\n\t\t\t\tcur = pa1;\r\n\t\t\t}\r\n\t\t}\r\n\r\n\t\tpublic void Reset()\r\n\t\t{\r\n\t\t\t_cur = null;\r\n\t\t}\r\n\t}\r\n}\r\n<\/pre>\n
\nMoveNext \u30e1\u30bd\u30c3\u30c9\u304c\u82e5\u5e72\u3084\u3084\u3053\u3057\u304f\u3066\u3001XML \u306e\u30c4\u30ea\u30fc\u69cb\u9020\u3092\u89aa\u5b50\u95a2\u4fc2\u3092\u4f1d\u3063\u3066\u63a2\u7d22\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u30d0\u30a4\u30ca\u30ea\u30b5\u30fc\u30c1\u306e\u8981\u9818\u3067\u3059\u306d\u3002
\n\u6b21\u306e\u5144\u5f1f\u8981\u7d20\u3092\u62fe\u3046\u3053\u3068\u304c\u5fc5\u8981\u306a\u306e\u3067\u3001XmlNode.NextSubling \u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u3044\u307e\u3059\u3002\n<\/p>\n
\r\n\t\tpublic XmlNode NextSubling\r\n\t\t{\r\n\t\t\tget\r\n\t\t\t{\r\n\t\t\t\tif (this.Parent == null)\r\n\t\t\t\t{\r\n\t\t\t\t\treturn null;\r\n\t\t\t\t}\r\n#if true\r\n\t\t\t\tvar it = this.Parent.Children.GetEnumerator();\r\n\t\t\t\twhile ( it.MoveNext() ) {\r\n\t\t\t\t\tif ( it.Current == this ) {\r\n\t\t\t\t\t\tif ( it.MoveNext() ) {\r\n\t\t\t\t\t\t\treturn it.Current;\r\n\t\t\t\t\t\t} else {\r\n\t\t\t\t\t\t\treturn null;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\treturn null;\r\n#else\r\n\t\t\t\tfor (int i = 0; i < this.Parent.Children.Count; i++)\r\n\t\t\t\t{\r\n\t\t\t\t\tXmlNode nd = this.Parent.Children[i];\r\n\t\t\t\t\tif (this.Equals(nd))\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tif (i < this.Parent.Children.Count - 1)\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\treturn this.Parent.Children[i + 1];\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t\telse\r\n\t\t\t\t\t\t{\r\n\t\t\t\t\t\t\treturn null;\r\n\t\t\t\t\t\t}\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\treturn null;\r\n#endif\r\n\t\t\t}\r\n\t\t}\r\n<\/pre>\n
\n\u3053\u3093\u306a\u611f\u3058\u3067\u3044\u3061\u3044\u3061\u63a2\u7d22\u3057\u3066\u3044\u308b\u306e\u3067\u30b9\u30d4\u30fc\u30c9\u7684\u306b\u306f\u9045\u3044\u306e\u3067\u3059\u304c\u3001\u7528\u9014\u306f\u8db3\u308a\u308b\u306e\u3067OK\u3068\u3057\u307e\u3059\u3002
\n\u6700\u521d\u306f for \u6587\u3067\u66f8\u3044\u3066\u304a\u3044\u3066\u3001\u5f8c\u304b\u3089 GetEnumerator \u3067\u66f8\u304d\u76f4\u3057\u3066\u3042\u308a\u307e\u3059\u304c…\u591a\u5206\u30b9\u30d4\u30fc\u30c9\u306f\u5909\u308f\u3089\u306a\u3044\u3067\u3057\u3087\u3046\u3002\n<\/p>\n
\n\u25a0\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u66f8\u304f\n<\/p>\n
\n\u4f8b\u306b\u3088\u3063\u3066\u3001\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u307e\u3059\u3002\u6628\u65e5\u66f8\u3044\u305f XmlNode \u306e\u69cb\u7bc9\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\u3092\u4f7f\u3063\u3066\u3001\u307d\u3061\u307d\u3061\u3068\u79fb\u690d\u3002\n<\/p>\n
\r\n\t[TestClass]\r\n\tpublic class TestXmlNavi\r\n\t{\r\n\t\t[TestMethod]\r\n\t\tpublic void TestNormal()\r\n\t\t{\r\n\t\t\tvar root = new XmlNode(&quot;root&quot;)\r\n\t\t\t\t.Node(&quot;person&quot;)\r\n\t\t\t\t.Node(&quot;name&quot;, &quot;masuda&quot;)\r\n\t\t\t\t.Root;\r\n\r\n\t\t\t\/\/ \u30bf\u30b0\u304c\u691c\u7d22\u3067\u304d\u305f\u5834\u5408\r\n\t\t\tvar q = new XmlNavigator(root)\r\n\t\t\t\t.Where(n => n.TagName == &quot;name&quot;)\r\n\t\t\t\t.FirstOrDefault();\r\n\t\t\tAssert.AreEqual(&quot;masuda&quot;, q.Value);\r\n\r\n\t\t\t\/\/ \u30bf\u30b0\u304c\u898b\u3064\u304b\u3089\u306a\u304b\u3063\u305f\u5834\u5408\r\n\t\t\tq = new XmlNavigator(root)\r\n\t\t\t\t.Where(n => n.TagName == &quot;error&quot;)\r\n\t\t\t\t.FirstOrDefault();\r\n\t\t\tAssert.AreEqual(null, q);\r\n\r\n\t\t}\r\n\r\n\t\t[TestMethod]\r\n\t\tpublic void TestNormal2()\r\n\t\t{\r\n\t\t\tvar root = new XmlNode(&quot;root&quot;)\r\n\t\t\t\t.Node(&quot;person&quot;)\r\n\t\t\t\t.AddNode(&quot;name&quot;, &quot;masuda&quot;)\r\n\t\t\t\t.AddNode(&quot;name&quot;, &quot;yamada&quot;)\r\n\t\t\t\t.AddNode(&quot;name&quot;, &quot;yamasaki&quot;)\r\n\t\t\t\t.Root;\r\n\r\n\t\t\t\/\/ \u30bf\u30b0\u304c\u691c\u7d22\u3067\u304d\u305f\u5834\u5408\r\n\t\t\tvar q = new XmlNavigator(root)\r\n\t\t\t\t.Where(n => n.TagName == &quot;name&quot;)\r\n\t\t\t\t;\r\n\t\t\tAssert.AreEqual(3, q.Count());\r\n\t\t\tAssert.AreEqual(&quot;masuda&quot;, q.First().Value);\r\n\t\t}\r\n\r\n\t\t[TestMethod]\r\n\t\tpublic void TestNormal3()\r\n\t\t{\r\n\t\t\tvar root = new XmlNode(&quot;root&quot;)\r\n\t\t\t\t.Node(&quot;person&quot;).AddAttr(&quot;id&quot;, &quot;1&quot;)\r\n\t\t\t\t\t.AddNode(&quot;name&quot;, &quot;masuda&quot;)\r\n\t\t\t\t\t.AddNode(&quot;age&quot;, &quot;44&quot;)\r\n\t\t\t\t.Parent\r\n\t\t\t\t.Node(&quot;person&quot;).AddAttr(&quot;id&quot;, &quot;2&quot;)\r\n\t\t\t\t\t.AddNode(&quot;name&quot;, &quot;yamada&quot;)\r\n\t\t\t\t\t.AddNode(&quot;age&quot;, &quot;20&quot;)\r\n\t\t\t\t.Parent\r\n\t\t\t\t.Node(&quot;person&quot;).AddAttr(&quot;id&quot;, &quot;3&quot;)\r\n\t\t\t\t\t.AddNode(&quot;name&quot;, &quot;tanaka&quot;)\r\n\t\t\t\t\t.AddNode(&quot;age&quot;, &quot;10&quot;)\r\n\t\t\t\t.Root;\r\n\r\n\t\t\t\/\/ \u30bf\u30b0\u304c\u691c\u7d22\u3067\u304d\u305f\u5834\u5408\r\n\t\t\tvar q = new XmlNavigator(root)\r\n\t\t\t\t.Where(n => n.Attrs[&quot;id&quot;] == &quot;2&quot;)\r\n\t\t\t\t.FirstOrDefault();\r\n\t\t\tAssert.AreEqual(&quot;person&quot;, q.TagName);\r\n\t\t\t\/\/ ExDoc\u8a18\u8ff0\r\n\t\t\tAssert.AreEqual(&quot;yamada&quot;, q \/ &quot;name&quot;);\r\n\t\t\tAssert.AreEqual(&quot;20&quot;, q \/ &quot;age&quot;);\r\n\t\t}\r\n\r\n\t\t[TestMethod]\r\n\t\tpublic void TestNormal4()\r\n\t\t{\r\n\t\t\tvar root = new XmlNode(&quot;root&quot;)\r\n\t\t\t\t.Node(&quot;person&quot;).AddAttr(&quot;id&quot;, &quot;1&quot;)\r\n\t\t\t\t\t.AddNode(&quot;name&quot;, &quot;masuda&quot;)\r\n\t\t\t\t\t.AddNode(&quot;age&quot;, &quot;44&quot;)\r\n\t\t\t\t.Parent\r\n\t\t\t\t.Node(&quot;person&quot;).AddAttr(&quot;id&quot;, &quot;2&quot;)\r\n\t\t\t\t\t.AddNode(&quot;name&quot;, &quot;yamada&quot;)\r\n\t\t\t\t\t.AddNode(&quot;age&quot;, &quot;20&quot;)\r\n\t\t\t\t.Parent\r\n\t\t\t\t.Node(&quot;person&quot;).AddAttr(&quot;id&quot;, &quot;3&quot;)\r\n\t\t\t\t\t.AddNode(&quot;name&quot;, &quot;tanaka&quot;)\r\n\t\t\t\t\t.AddNode(&quot;age&quot;, &quot;10&quot;)\r\n\t\t\t\t.Root;\r\n\r\n\t\t\t\/\/ \u30af\u30a8\u30ea\u6587\u306b\u3057\u3066\u307f\u308b\r\n\t\t\tvar q = from n in new XmlNavigator(root)\r\n\t\t\t\t\twhere n.Attrs[&quot;id&quot;] == &quot;2&quot;\r\n\t\t\t\t\tselect n;\r\n\r\n\t\t\tAssert.AreEqual(&quot;person&quot;, q.First());\r\n\t\t\t\/\/ ExDoc\u8a18\u8ff0\r\n\t\t\tAssert.AreEqual(&quot;yamada&quot;, q.First() \/ &quot;name&quot;);\r\n\t\t\tAssert.AreEqual(&quot;20&quot;, q.First() \/ &quot;age&quot;);\r\n\t\t}\r\n\r\n\t\t[TestMethod]\r\n\t\tpublic void TestNormal5()\r\n\t\t{\r\n\t\t\tvar root = new XmlNode(&quot;root&quot;)\r\n\t\t\t\t.Node(&quot;person&quot;).AddAttr(&quot;id&quot;, &quot;1&quot;)\r\n\t\t\t\t\t.AddNode(&quot;name&quot;, &quot;masuda&quot;)\r\n\t\t\t\t\t.AddNode(&quot;age&quot;, &quot;44&quot;)\r\n\t\t\t\t.Parent\r\n\t\t\t\t.Node(&quot;person&quot;).AddAttr(&quot;id&quot;, &quot;2&quot;)\r\n\t\t\t\t\t.AddNode(&quot;name&quot;, &quot;yamada&quot;)\r\n\t\t\t\t\t.AddNode(&quot;age&quot;, &quot;20&quot;)\r\n\t\t\t\t.Parent\r\n\t\t\t\t.Node(&quot;person&quot;).AddAttr(&quot;id&quot;, &quot;3&quot;)\r\n\t\t\t\t\t.AddNode(&quot;name&quot;, &quot;tanaka&quot;)\r\n\t\t\t\t\t.AddNode(&quot;age&quot;, &quot;10&quot;)\r\n\t\t\t\t.Root;\r\n\r\n\t\t\t\/\/ \u30af\u30a8\u30ea\u6587\u306b\u3057\u3066\u307f\u308b\r\n\t\t\tvar nd = from n in new XmlNavigator(root)\r\n\t\t\t\t\t where n % &quot;id&quot; == &quot;2&quot;\r\n\t\t\t\t\t select n;\r\n\t\t\tXmlNode xn = nd.FirstOrDefault();\r\n\r\n\t\t\t\/\/ \u672c\u6765\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3057\u305f\u306e\u3060\u304c\u6697\u9ed9\u30ad\u30e3\u30b9\u30c8\u304c\u4f5c\u308c\u306a\u3044\r\n\t\t\t\/*\r\n\t\t\tXmlNode xn = from n in new XmlNavigator(root)\r\n\t\t\t\t\t\t where n % &quot;id&quot; == &quot;2&quot;\r\n\t\t\t\t\t\t select n;\r\n\t\t\t*\/\r\n\r\n\t\t\tAssert.AreEqual(&quot;person&quot;, xn);\r\n\t\t\t\/\/ ExDoc\u8a18\u8ff0\r\n\t\t\tAssert.AreEqual(&quot;yamada&quot;, xn \/ &quot;name&quot;);\r\n\t\t\tAssert.AreEqual(&quot;20&quot;, xn \/ &quot;age&quot;);\r\n\t\t}\r\n\t}\r\n<\/pre>\n
\nTestNormal3 \u3042\u305f\u308a\u304b\u3089\u3042\u308b Assert.AreEqual(“yamada”, q \/ “name”); \u306f\u3001\u5b50\u8981\u7d20\u304b\u3089\u300cname\u300d\u30bf\u30b0\u3092\u53d6\u5f97\u3059\u308b\u3068\u3044\u3046 ExDoc \u306e\u6587\u6cd5\u3067\u3059…\u3064\u30fc\u304b\u3001operator \u306e\u591a\u91cd\u5b9a\u7fa9\u3002
\nXmlNode \u30af\u30e9\u30b9\u306b\u4ee5\u4e0b\u306e operator \u3092\u8ffd\u52a0\u3057\u3066\u304a\u304d\u307e\u3059\u3002\n<\/p>\n
\r\n\t#region sweet operator \r\n\tpublic static XmlNode operator \/ ( XmlNode node, string tag ) \r\n\t{\r\n\t\tvar nd = node.Children.Find( n => n.TagName == tag ) ;\r\n\t\treturn nd ?? XmlNode.Empty ;\r\n\t}\r\n\tpublic static implicit operator string(XmlNode node)\r\n\t{\r\n\t\treturn node.Value;\r\n\t}\r\n\tpublic static string operator %(XmlNode node, string key)\r\n\t{\r\n\t\treturn node.Attrs[key];\r\n\t}\r\n<\/pre>\n
\nExDoc \u3092\u4f5c\u3063\u305f\u3068\u304d\u306f\u7b49\u4fa1\u30aa\u30da\u30ec\u30fc\u30bf\uff08==\u6f14\u7b97\u5b50\uff09\u3082\u591a\u91cd\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u4eca\u56de\u306f LINQ \u306b\u4efb\u305b\u308b\u306e\u3067\u3001\/\u6f14\u7b97\u5b50\u3068%\u6f14\u7b97\u5b50\u3060\u3051\u3092\u591a\u91cd\u5b9a\u7fa9\u3057\u307e\u3059\u3002
\nTestNormal5 \u30e1\u30bd\u30c3\u30c9\u306e\u6697\u9ed9\u306e\u30ad\u30e3\u30b9\u30c8\u306f\u3046\u307e\u304f\u5b9a\u7fa9\u3067\u304d\u306a\u3044\u306e\u3067\u3001\u65ad\u5ff5\u3057\u3066\u307e\u3059\u3002\u4f55\u304b\u9003\u308c\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u304b\u3068\u3001\u5f8c\u3067\u30c1\u30a7\u30c3\u30af\u3002\n<\/p>\n
\n\u25a0\u3067\u304d\u3042\u304c\u3063\u305f\u30b3\u30fc\u30c9\n<\/p>\n
\nXmlNavigator \u30af\u30e9\u30b9\u306f\u6700\u521d\u306b\u793a\u3057\u305f\u901a\u308a\u3067\u3059\u3002XmlNode \u30af\u30e9\u30b9\u306f\u591a\u5c11\u624b\u3092\u52a0\u3048\u3066\u30c6\u30b9\u30c8\u306fOK\u3068\u3044\u3046\u3053\u3068\u3067\u3002
\nIEnumerator<XmlNode>.MoveNext \u3055\u3048\u304d\u3063\u3061\u308a\u3068\u5b9f\u88c5\u3057\u3066\u3044\u3051\u3070\u3001LINQ \u6587\u6cd5\u3067\u52d5\u304f\u306e\u3067\u304b\u306a\u308a\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u304c\u697d\u3067\u3059\u3002\n<\/p>\n
\n\u25a0IEnumerable<XmlNode> \u304b\u3089\u306e\u6697\u9ed9\u306e\u30ad\u30e3\u30b9\u30c8\u304c\u4f5c\u308c\u306a\u3044\n<\/p>\n
\nExDoc \u3067\u4f5c\u3063\u305f\u3088\u3046\u306b\u3001LINQ \u306e\u7d50\u679c\u3092 XmlNode \u3067\u76f4\u63a5\u53d7\u3051\u305f\u3044\uff08\u6697\u9ed9\u306e\u30ad\u30e3\u30b9\u30c8\u3092\u53d7\u3051\u305f\u3044\uff09\u306e\u3067\u3059\u304c\u3001\u3053\u308c\u304c\u5b9f\u88c5\u3067\u304d\u307e\u305b\u3093\u3002\n<\/p>\n
\r\n\tXmlNode xn = from n in new XmlNavigator(root)\r\n\t\t\t\t where n % "id" == "2"\r\n\t\t\t\t select n;\r\n<\/pre>\n
\n\u4e0b\u8a18\u306e\u3088\u3046\u306b\u4f5c\u308b\u306e\u3067\u3059\u304c\u3001\n<\/p>\n
\r\nclass XmlNode {\r\n...\r\n\tpublic static implicit operator XmlNode(IEnumerable<XmlNode> lst)\r\n\t{\r\n\t\treturn lst.FirstOrDefault() ?? XmlNode.Empty;\r\n\t}\r\n}\r\n<\/pre>\n
\n\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u3068\u3053\u3093\u306a\u30a8\u30e9\u30fc\u304c\u3002\n<\/p>\n
\r\n\u30a8\u30e9\u30fc\t1\t'Moonmile.XmlDom.XmlNode.implicit operator Moonmile.XmlDom.XmlNode(System.Collections.Generic.IEnumerable<Moonmile.XmlDom.XmlNode>)': \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3068\u306e\u9593\u306b\u304a\u3051\u308b\u30e6\u30fc\u30b6\u30fc\u5b9a\u7fa9\u306e\u5909\u63db\u306f\u8a31\u53ef\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\r\n<\/pre>\n
\n\u3063\u3066\u306a\u5177\u5408\u3067\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304b\u3089\u30ad\u30e3\u30b9\u30c8\u306f\u3067\u304d\u306a\u3044\u305d\u3046\u3067\u3059\u3002\u3046\u30fc\u3080\u6b8b\u5ff5\u3002
\n\u306a\u3093\u304b\u3044\u3044\u65b9\u6cd5\u306f\u306a\u3044\u3067\u3059\u304b\u306d\u3047\u3002\u591a\u5206\u3001ToList \u30e1\u30bd\u30c3\u30c9\u306e\u3088\u3046\u306b\u62e1\u5f35\u30e1\u30bd\u30c3\u30c9\u3092\u3064\u3051\u308c\u3070\u3044\u3044\u3093\u3067\u3057\u3087\u3046\u304c\n<\/p>\n
\r\n\tXmlNode xn = (from n in new XmlNavigator(root)\r\n\t\t\t\t where n % "id" == "2"\r\n\t\t\t\t select n ).ToXmlNode();\r\n<\/pre>\n
\n\u306e\u3088\u3046\u306b\u6298\u89d2\u306e\u30af\u30a8\u30ea\u6587\u6cd5\u306b\u62ec\u5f27\u3092\u5165\u308c\u306a\u3044\u3068\u99c4\u76ee\u306a\u306e\u3067\u3044\u307e\u3044\u3061\u904e\u304e\u3002
\n\u307e\u3042\u3001\u30e1\u30bd\u30c3\u30c9\u7684\u306b\n<\/p>\n
\r\n\tvar xn = new XmlNavigator(root)\r\n\t\t.Where(n => n % &quot;id&quot; == &quot;2&quot;)\r\n\t\t.FirstOrDefault();\r\n<\/pre>\n
\n\u3068\u66f8\u304f\u3068\u3001\u3072\u3068\u3064\u306e XmlNode \u304c\u53d6\u308c\u308b\u3093\u306e\u3067\u5341\u5206\u306a\u3093\u3067\u3059\u3051\u3069\u306d\u3002\u5f8c\u3067\u8003\u3048\u307e\u3059\u304b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6628\u65e5\u306e\u7d9a\u304d\u3067\u3001XmlNode \u306b navigator \u306e\u6a5f\u80fd\u3092\u4ed8\u3051\u3066\u307f\u307e\u3059\u3002 xml \u306b\u95a2\u3059\u308b\u30ca\u30d3\u30b2\u30fc\u30bf\u306f\u3001\u65e2\u306b XPathNavigator \u30af\u30e9\u30b9\u304c\u3042\u3063\u3066\u3001XPATH \u306e\u8a18\u6cd5\u3092\u4f7f\u3063\u3066 XML \u306e\u30c4\u30ea\u30fc\u69cb\u9020\u3092\u63a2\u7d22\u3067\u304d\u308b … \u7d9a\u304d\u3092\u8aad\u3080 →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-3628","post","type-post","status-publish","format-standard","hentry","category-csharp"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/3628","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/comments?post=3628"}],"version-history":[{"count":2,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/3628\/revisions"}],"predecessor-version":[{"id":3630,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/3628\/revisions\/3630"}],"wp:attachment":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/media?parent=3628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/categories?post=3628"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/tags?post=3628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}