DGML

Directed Graph Markup Language (DGML) is an XML-based file format for directed graphs.

DGML

Developed by	Microsoft
Initial release	September 2009; 14 years ago (2009-09)
Type of format	Directed graph
Extended from	XML
Website	docs.microsoft.com/en-us/visualstudio/modeling/directed-graph-markup-language-dgml-reference

Introduction to DGML

Here is what a simple directed graph with three nodes and two links between them looks like

<?xml version="1.0" encoding="utf-8"?> <DirectedGraph xmlns="http://schemas.microsoft.com/vs/2009/dgml">  <Nodes>  <Node Id="a" Label="a" Size="10" />  <Node Id="b" Background="#FF008080" Label="b" />  <Node Id="c" Label="c" Start="2010-06-10" />  </Nodes>  <Links>  <Link Source="a" Target="b" />  <Link Source="a" Target="c" />  </Links>  <Properties>  <Property Id="Background" Label="Background" DataType="Brush" />  <Property Id="Label" Label="Label" DataType="String" />  <Property Id="Size" DataType="String" />  <Property Id="Start" DataType="DateTime" />  </Properties> </DirectedGraph> 

which looks like this:

 

The complete XSD schema for DGML is available at [1]. DGML not only allows describing nodes and links in a graph, but also annotating those nodes and links with any user defined property and/or category.

See also

• DOT (graph description language)
• Graphviz
• Microsoft Visio

External links

• http://msdn.microsoft.com/vstudio homepage of Visual Studio
• http://schemas.microsoft.com/vs/2009/dgml page describing the XSD schema for DGML
• http://www.lovettsoftware.com contains videos showing how to use DGML graphs in Visual Studio
• https://msdn.microsoft.com/en-us/library/dd409365.aspx, documentation on how to use DGML