[英]remove nodes listed into XmlNodeList from XML file
我的XML文件有問題。
<?xml version="1.0" encoding="UTF-8"?>
<config>
<settings>
<excelFilePath>C:\Temp\</excelFilePath>
<mailHost>smtp</mailHost>
<mailPort>25</mailPort>
<mailFrom>me@test.com</mailFrom>
<keepInCopy>
<mailCC>email1@test.com</mailCC>
<mailCC>email2@test.com</mailCC>
<mailCC>email3@test.com</mailCC>
</keepInCopy>
<mailSubject>My Mail subject</mailSubject>
<mailBodyPath>Templates\Template1.htm</mailBodyPath>
</settings>
</config>
實際上,我只需要刪除所有標簽“ mailCC”。 我目前正在嘗試此C#代碼,但沒有任何反應:
XmlDocument xml = new XmlDocument();
xml.Load(FilePath);
XmlNodeList xnList = xml.GetElementsByTagName("mailCC");
foreach (XmlNode xn in xnList)
{
xn.RemoveChild(xn.FirstChild);
xml.Save(FilePath);
}
請問你能幫幫我嗎?
刪除節點將更新集合,因此您不應使用foreach
循環。
XmlNodeList xnList = xml.GetElementsByTagName("mailCC");
while (xnList.Count > 0) {
xnList[0].ParentNode.RemoveChild(xnList[0]);
}
使用XmlDocument
將從其父節點中刪除一個節點。 但是您也可以這樣做:
var xn = xml.SelectSingleNode("/config/settings/keepInCopy");
if (xn != null)
{
xn.RemoveAll(); // Remove all "mailCC" elements, but keep "keepInCopy" node **OR**
xn.ParentNode.RemoveChild(xn); // Remove "keepInCopy" element and all children
}
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