c＃解析xml with和撇号抛出异常

Question

I am parsing an xml file and am running into an issue when trying find a node that has an apostrophe in it. When item name does not have this everything works fine. I have tried replacing the apostrophe with different escape chars but am not having much luck

string s = "/itemDB/item[@name='" + itemName + "']";

// Things i have tried that did not work
// s.Replace("'", "''");
// .Replace("'", "\'");

XmlNode parent = root.SelectSingleNode(s);

I always receive an XPathException. What is the proper way to do this. Thanks

Answer 1

对于撇号，用'替换它'

Answer 2

You can do it Like this:

XmlDocument root = new XmlDocument();

root.LoadXml(@"<itemDB><item name=""abc'def""/></itemDB>");

XmlNode node = root.SelectSingleNode(@"itemDB/item[@name=""abc'def""]");

Note the verbatim string literal '@' and the double quotes.

Your code would then look like this and there is no need to replace anything:

var itemName = @"abc'def";

string s = @"/itemDB/item[@name=""" + itemName + @"""]";