删除所有具有给定名称的 XML 属性 [英] Remove all XML Attributes with a Given Name

问题描述

我正在编辑一系列 XML 文件，我需要删除名称为foo"的所有属性.此属性出现在不止一种类型的元素中.XML 中的一个示例片段可能是:

I am editing a series of XML files, and I need to remove all attributes with the name "foo". This attribute appears in more than one type of element. An example snippet from the XML might be:

<bodymatter id="######">
  <level1 id="######">
    <pagenum page="#####" id="######" foo="######" />
    <h1 id="#####" foo="#####">Header</h1>
    <imggroup id="#######">
               .
               .
              etc.

我最好的解决方案是使用正则表达式:

The best solution I have uses Regex:

Regex regex = new Regex("foo=\"" + ".*?" + "\"", RegexOptions.Singleline);
content = regex.Replace(content, "");

我知道内置 XML 解析器会有所帮助，但理想情况下，我想进行简单的 XML 替换/删除，而不必处理整个 XML 解析器的负担.在这种情况下，Regex 是最佳解决方案吗?

I know built-in XML parsers could help, but ideally I want to make simple XML replacements/removals without having to deal with the baggage of an entire XML parser. Is Regex the best solution in this case?

编辑:

在 XmlDocument 类中进行一些研究后，这是我想出的一种可能的解决方案(删除存储在数组ids"中的多个属性类型):

After some research in the XmlDocument class, here is one possible solution I came up with (to remove more than one attribute type stored in the array "ids"):

private void removeAttributesbyName(string[] ids)
{
    XmlDocument doc = new XmlDocument();
    doc.Load(path);
    XmlNodeList xnlNodes = doc.GetElementsByTagName("*");
    foreach (XmlElement el in xnlNodes)
    {
        for (int i = 0; i <= ids.Length - 1; i++)
        {
            if (el.HasAttribute(ids[i]))
            {
                el.RemoveAttribute(ids[i]);
            }
            if (el.HasChildNodes)
            {
                foreach (XmlNode child in el.ChildNodes)
                {
                    if (child is XmlElement && (child as XmlElement).HasAttribute(ids[i]))
                    {
                        (child as XmlElement).RemoveAttribute(ids[i]);
                    }
                }
            }
        }
    }
}

我不知道这是否尽可能有效，但我已经对其进行了测试，它似乎工作正常.

I don't know if this is as efficient as it possibly could be, but I've tested it and it seems to work fine.

推荐答案

不要将正则表达式用于 XML 操作.您可以使用 Linq to XML:

Do not use regex for XML manipulation. You can use Linq to XML:

XDocument xdoc = XDocument.Parse(xml);
foreach (var node in xdoc.Descendants().Where(e => e.Attribute("foo")!=null))
{
    node.Attribute("foo").Remove();
}

string result = xdoc.ToString();

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