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I am working on a small project that is receiving XML data in string form from a long running application. I am trying to load this string data into an XDocument ( System.Xml.Linq.XDocument ), and then from there do some XML Magic and create an xlsx file for a report on the data. On occasion, I receive the data that has invalid XML characters, and when trying to parse the string into an XDocument , I get this error. [System.Xml.XmlException] Message: '?', hexadecimal value 0x1C, is an invalid character. Since I have no control over the remote application, you could expect ANY kind of character. I am well aware that XML has a way where you can put characters in it such as &#x1C or something like that. If at all possible I would SERIOUSLY like to keep ALL the data. If not, than let it be. I have thought about editing the response string programatically, then going back and trying to re-parse should an exception be thrown, but I have tried a few methods and none of them seem successful. Thank you for your thought. Code is something along the line of this: TextReader tr; XDocument doc; string response; //XML string received from server. ... tr = new StringReader (response); try { doc = XDocument.Load(tr); } catch (XmlException e) { //handle here? }

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