Xml content like following:

<xml>
  <item content="abcd &#xD; abcd &#xA; abcd" />
</xml>

When using XmlDocument to read the content of content attribute, 
 and 
 are automatically escaped.

Code:

XmlDocument doc = new XmlDocument();
var content = doc.SelectSingleNode("/xml/item").Attributes["content"].Value;

How can get the raw text without char escaping?

CodePudding user response：

If these characters were written to the lexical XML stream without escaping, then they would be swallowed by the XML parser when the stream is read by the recipient, as a result of the XML line-ending normalisation rules. So you've got it the wrong way around: the reason they are escaped is in order to preserve them; if they weren't escaped, they would be lost.

CodePudding user response：

I got a workaround, it works for me:

private static string GetAttributeValue(XmlNode node, string attributeName)
{
    if (node == null || string.IsNullOrWhiteSpace(attributeName))
    {
        throw new ArgumentException();
    }

    const string CharLF = "
";
    const string CharCR = "
";            

    string xmlContent = node.OuterXml;

    if (!xmlContent.Contains(CharLF) && !xmlContent.Contains(CharCR))
    {
        // no special char, return its original value directly
        return node.Attributes[attributeName].Value;
    }

    string value = string.Empty;
    if (xmlContent.Contains(attributeName))
    {
        value = xmlContent.Substring(xmlContent.IndexOf(attributeName)).Trim();
        value = value.Substring(value.IndexOf("\"")   1);
        value = value.Substring(0, value.IndexOf("\""));
    }

    return value;
}