How to create a XmlDocument using XmlWriter in .NET?

.net, xmldocument, xmlwriter

Solution

Here's at least one solution:

XmlDocument doc = new XmlDocument(); 
using (XmlWriter writer = doc.CreateNavigator().AppendChild()) 
{ 
    // Do this directly 
     writer.WriteStartDocument(); 
     writer.WriteStartElement("root"); 
     writer.WriteElementString("foo", "bar"); 
     writer.WriteEndElement(); 
     writer.WriteEndDocument();
    // or anything else you want to with writer, like calling functions etc.
}

Apparently XpathNavigator gives you a XmlWriter when you call AppendChild()

Credits go to Martin Honnen on : http://groups.google.com/group/microsoft.public.dotnet.xml/browse_thread/thread/24e4c8d249ad8299?pli=1

Problem

Many .NET functions use XmlWriter to output/generate xml. Outputting to a file/string/memory is a very operation: ``` XmlWriter xw = XmlWriter.Create(PutYourStreamFileWriterEtcHere); xw.WriteStartElement("root"); ... ``` Sometimes , you need to manipulate the resulting Xml and would therefore like to load it into a XmlDocument or might need an XmlDocument for some other reason but you must generate the XML using an XmlWriter. For example, if you call a function in a 3rd party library that outputs to a XmlWriter only. One of the things you can do is write the xml to a string and then load it into your XmlDocument: ``` StringWriter S = new StringWriter(); XmlWriter xw = XmlWriter.Create(S); /* write away */ XmlDocument xdoc = new XmlDocument(); xdoc.LoadXml(S.ToString()); ``` However this is inefficient - first you serialize all the xml info into a string, then you parse the string again to create the DOM. How can you point an XmlWriter to build a XmlDocument directly?

Original source