A little late, but it’s actually relatively easy to implement yourself:
public class DGMLWriter
{
public struct Graph
{
public Node[] Nodes;
public Link[] Links;
}
public struct Node
{
[XmlAttribute]
public string Id;
[XmlAttribute]
public string Label;
public Node(string id, string label)
{
this.Id = id;
this.Label = label;
}
}
public struct Link
{
[XmlAttribute]
public string Source;
[XmlAttribute]
public string Target;
[XmlAttribute]
public string Label;
public Link(string source, string target, string label)
{
this.Source = source;
this.Target = target;
this.Label = label;
}
}
public List<Node> Nodes { get; protected set; }
public List<Link> Links { get; protected set; }
public DGMLWriter()
{
Nodes = new List<Node>();
Links = new List<Link>();
}
public void AddNode(Node n)
{
this.Nodes.Add(n);
}
public void AddLink(Link l)
{
this.Links.Add(l);
}
public void Serialize(string xmlpath)
{
Graph g = new Graph();
g.Nodes = this.Nodes.ToArray();
g.Links = this.Links.ToArray();
XmlRootAttribute root = new XmlRootAttribute("DirectedGraph");
root.Namespace = "http://schemas.microsoft.com/vs/2009/dgml";
XmlSerializer serializer = new XmlSerializer(typeof(Graph), root);
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
using (XmlWriter xmlWriter = XmlWriter.Create(xmlpath, settings))
{
serializer.Serialize(xmlWriter, g);
}
}
}