Html은 Html Agility Pack으로 업데이트되지 않습니다.

c# html html-agility-pack

문제

html 조각에서 img 및 map 요소를 제거하려고합니다.

HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);

var oldHtml = doc.DocumentNode.InnerHtml;

if (doc.DocumentNode.SelectNodes("//img[@usemap]") != null)
{
    HtmlNode img = doc.DocumentNode.SelectSingleNode("//img[@usemap]");
    img.ParentNode.RemoveChild(img);
}

if (doc.DocumentNode.SelectNodes("//map") != null)
{
    HtmlNode map = doc.DocumentNode.SelectSingleNode("//map");
    map.ParentNode.RemoveChild(map);
}

var newHtml = doc.DocumentNode.InnerHtml;

newHtml에는 여전히 img 및 map 요소가 포함되어 있습니다. html이 업데이트되기 전에 다른 작업을해야합니까?

여기에 스트립하려고 html입니다 :

<p><img src="/media/8301/HD00_498x299.jpg"  width="498"  height="299" alt="HD00.JPG" usemap="#imgmap201392714219"/><br />
<br />
 <a title="Download ZIP DWG"
href="/media/8103/detailtekeningen-dwg-unidek-aero.zip"
target="_blank">Klik hier om alle DWG&nbsp;bestanden in
een&nbsp;zipfile te downloaden.</a><br />
 <a title="Download DXF"
href="/media/8104/detailtekeningen-dxf-unidek-aero.zip"
target="_blank">Klik hier om alle DXF bestanden in een zipfile te
downloaden.</a><br />
 <a title="Download PDF"
href="/media/8116/detailtekeningen-pdf-unidek-aero.zip"
target="_blank">Klik hier om alle PDF bestanden in een zipfile te
downloaden.</a><br />
<br />
 <strong><a title="Bouwdetails berekende psi-waarden"
href="/{localLink:8014}" target="_blank">Link naar de technische
bouwdetails met verbeterde eigen ψ-waarden<br />
</a></strong> &nbsp;<map name="imgmap2012104102243"
id="imgmap2012104102243">
<area title="" href="/nl/producten/hellend-dak/unidek-aero/1"
shape="rect" coords="194,419,219,439" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/2"
shape="rect" coords="221,420,246,439" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/3"
shape="rect" coords="200,302,226,320" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/4"
shape="rect" coords="209,167,234,185" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/6"
shape="rect" coords="68,46,98,67" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/7"
shape="rect" coords="102,203,129,224" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/8"
shape="rect" coords="273,339,302,360" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/9"
shape="rect" coords="387,350,417,372" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/10"
shape="rect" coords="324,341,354,363" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/11"
shape="rect" coords="223,369,252,390" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/12"
shape="rect" coords="62,270,89,294" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/13"
shape="rect" coords="93,270,119,294" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/14"
shape="rect" coords="31,94,60,114" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/14"
shape="rect" coords="79,161,106,182" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/15"
shape="rect" coords="19,150,50,171" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/15"
shape="rect" coords="82,113,110,134" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/16"
shape="rect" coords="176,231,205,253" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/17"
shape="rect" coords="147,179,176,200" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/18"
shape="rect" coords="139,235,166,257" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/19"
shape="rect" coords="204,56,231,78" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/20"
shape="rect" coords="125,135,153,157" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/21"
shape="rect" coords="265,263,290,284" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/23"
shape="rect" coords="9,202,36,225" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/24"
shape="rect" coords="39,202,65,225" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/25"
shape="rect" coords="158,80,184,101" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/26"
shape="rect" coords="188,80,213,102" target="_blank" alt="" />
</map><map id="imgmap201392714219">
<area title="" href="/nl/producten/hellend-dak/unidek-aero/1"
shape="rect" coords="265,463,279,480" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/2"
shape="rect" coords="282,466,297,480" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/3"
shape="rect" coords="213,339,237,358" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/4"
shape="rect" coords="206,204,227,220" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/6"
shape="rect" coords="113,105,135,121" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/7"
shape="rect" coords="134,246,154,262" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/8"
shape="rect" coords="299,369,319,386" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/9"
shape="rect" coords="432,409,453,425" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/10"
shape="rect" coords="363,394,385,413" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/11"
shape="rect" coords="254,406,276,422" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/12"
shape="rect" coords="105,298,122,314" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/13"
shape="rect" coords="122,298,139,314" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/14"
shape="rect" coords="53,121,77,139" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/15"
shape="rect" coords="49,165,72,182" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/16"
shape="rect" coords="195,272,214,288" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/17"
shape="rect" coords="152,212,175,230" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/18"
shape="rect" coords="160,276,180,293" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/19"
shape="rect" coords="234,88,255,105" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/20"
shape="rect" coords="132,155,158,174" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/21"
shape="rect" coords="299,294,321,311" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/23"
shape="rect" coords="40,234,55,250" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/24"
shape="rect" coords="56,233,73,251" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/25"
shape="rect" coords="185,108,202,127" target="_blank" alt="" />
<area title="" href="/nl/producten/hellend-dak/unidek-aero/26"
shape="rect" coords="203,109,219,127" target="_blank" alt="" />
</map></p>

img 및 map 요소를 디버깅 할 때 RemoveChild를 호출해도 html이 전혀 변경되지 않습니다. 또한 속성이나 다른 것을 변경하려고하면 아무 일도 일어나지 않습니다.

인기 답변

나는 HTML Agility 팩의 버그가 .InnerHtml 한 번만 요청할 수 있다는 것을 발견했습니다. 그 후에는 업데이트되지 않습니다. 당신은 그것을 두 번 요구하고 있습니다 :

HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);

var oldHtml = doc.DocumentNode.InnerHtml;

if (doc.DocumentNode.SelectNodes("//img[@usemap]") != null)
{
    HtmlNode img = doc.DocumentNode.SelectSingleNode("//img[@usemap]");
    img.ParentNode.RemoveChild(img);
}

if (doc.DocumentNode.SelectNodes("//map") != null)
{
    HtmlNode map = doc.DocumentNode.SelectSingleNode("//map");
    map.ParentNode.RemoveChild(map);
}

var newHtml = doc.DocumentNode.InnerHtml;

이 줄을 없애면 :

var oldHtml = doc.DocumentNode.InnerHtml;

그것은 작동해야합니다. 그것은 HtmlAgilityPack 무작위 버그 것 같습니다.

Sniffdk의 솔루션은 그가 .OuterHtml 한 번만 가져 .OuterHtml 때문에 작동합니다. HtmlUtilityPack 사람들은 그것을 고쳐야합니다.



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아래 라이선스: CC-BY-SA with attribution
와 제휴하지 않음 Stack Overflow
이 KB는 합법적입니까? 예, 이유를 알아보십시오.