如何在XmlTextWriter和XmlWriter之间切换？

Question

Microsoft recommend to use XmlWriter instead of XmlTextWriter https://msdn.microsoft.com/en-us/library/system.xml.xmltextwriter(v=vs.110).aspx

public string Serialize(BackgroundJobInfo info)
{
    var stringBuilder = new StringBuilder();

    using (var stringWriter = new StringWriter(stringBuilder, CultureInfo.InvariantCulture))
    {
        var writer = new XmlTextWriter(stringWriter);
        new DataContractSerializer(typeof(BackgroundJobInfo)).WriteObject(writer, info);
    }

    return stringBuilder.ToString();
}

How to correctly use XmlWriter in my method instead of XmlTextWriter ?

Answer 1

I'd use the factory method Create on XmlWriter class like:

var stringBuilder = new StringBuilder();
using(var writer = XmlWriter.Create(stringBuilder))
{
  new DataContractSerializer(typeof(BackgroundJobInfo)).WriteObject(writer, info)
}

Answer 2

Or you can do it without XmlWriter

public static string Serialize(BackgroundJobInfo info)
{
    string result = String.Empty;

    using (var ms = new MemoryStream())
    {
        var sw = new StreamWriter(ms);

        DataContractSerializer dcs = new DataContractSerializer(typeof(BackgroundJobInfo));
        dcs.WriteObject(ms, info);
        sw.Flush();

        ms.Position = 0;
        var sr = new StreamReader(ms);
        result = sr.ReadToEnd();               
    }             

    return result;
}