JSON.Net: Convert JSON string from XML string to instance issue

I have the following function:

public static T GetInstance<T>(string xmlString)
{
   var xmlDoc = new XmlDocument();
   xmlDoc.Load(new StringReader(xmlString));
   string jsonString = JsonConvert.SerializeXmlNode(xmlDoc.DocumentElement);
   T instance = JsonConvert.DeserializeObject(jsonString, typeof(T)) as T;
   return instance;
}

It works fine for normal XML strings. However, if the input XML string contains comments such as :

....
<!-- some comments ... 
-->
....

Then the function call to JsonConvert.DeserializeObject() will throw an exception:

Newtonsoft.Json.JsonSerializationException was unhandled
Message="Unexpected token when deserializing object: Comment"
Source="Newtonsoft.Json"
StackTrace:
   at Newtonsoft.Json.JsonSerializer.PopulateObject(Object newObject, JsonReader reader, Type objectType)
   ....

Either I have to trim out all the comments in the XML string, or if I can use any option settings in JsonConvert to ignore comments.

For the first option, if I have to take all the comments out by using XmlDocument, is there any options in XmlDocument available to convert an XML string to nodes-only XML string?

For the second option, I prefer, if there is any option in Json.Net to ignore comments when desialize to object?

From stackoverflow

• I think the best way for me right now is to remove all the comment nodes from the xml string first.

  public static string RemoveComments(
          string xmlString,
          int indention)
  {
     XmlDocument xDoc = new XmlDocument();
     xDoc.PreserveWhitespace = false;
     xDoc.LoadXml(xmlString);
     XmlNodeList list = xDoc.SelectNodes("//comment()");
  
     foreach (XmlNode node in list)
     {
        node.ParentNode.RemoveChild(node);
     }
  
     string xml;
     using (StringWriter sw = new StringWriter())
     {
        using (XmlTextWriter xtw = new XmlTextWriter(sw))
        {
          if (indention > 0)
          {
            xtw.IndentChar = ' ';
            xtw.Indentation = indention;
            xtw.Formatting = System.Xml.Formatting.Indented;
          }
  
          xDoc.WriteContentTo(xtw);
          xtw.Close();
          sw.Close();
        }
        xml = sw.ToString();
      }
  
    return xml;
    }
  

  And this is my function to get instance from xml string:

  public static T GetInstance<T>(string xmlString)
  {
    srring xml = RemoveComments(xmlString);
    var xmlDoc = new XmlDocument();
    xmlDoc.Load(new StringReader(xml));
    string jsonString = JsonConvert.SerializeXmlNode(xmlDoc.DocumentElement);
    T instance = JsonConvert.DeserializeObject(jsonString, typeof(T)) as T;
    return instance;
  }