What could cause an XML file to be filled with null characters?

Question

This is a tricky question. I suspect it will require some advanced knowledge of file systems to answer.

I have a WPF application, \"App1,\" targeting .NET framework

Answer 1

I have the same problem, there is an extra "NUL" character at the end of serialized xml file:

I am using XMLWriter like this:

using (var stringWriter = new Utf8StringWriter())
        {
            using (var xmlWriter = XmlWriter.Create(stringWriter, new XmlWriterSettings { Indent = true, IndentChars = "\t", NewLineChars = "\r\n", NewLineHandling = NewLineHandling.Replace }))
            {                    
                xmlSerializer.Serialize(xmlWriter, data, nameSpaces);
                xml =  stringWriter.ToString();
                var xmlDocument = new XmlDocument();
                xmlDocument.LoadXml(xml);
                if (removeEmptyNodes)
                {
                    RemoveEmptyNodes(xmlDocument);
                }
                xml = xmlDocument.InnerXml;
            }
        }