DGML - Add weight to link - directed-graph

Question

How do I add weight or value to the Edges or Link in a DGML file?
<?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>
I would like to be able to assign a weight or value to the lines between each node to designate the strength between the nodes.

Answer 1

You can add weights to each link by adding a label field with a value to each of the Link Sources. The numbers will appear beside the arrows on your graph.
<Link Source="a" Target="b" Label="5" />
<Link Source="a" Target="c" Label="6" />
Additionally, the background color of each node can be changed by creating Category groups and assigning that group to each node.
<Category Id="Orange" Background="Orange" />
<Category Id="Yellow" Background="Yellow" />
<Node Id="a" Category="Orange" />
<Node Id="b" Category="Yellow" />

Answer 2

Here's an example that uses a link Weight Style to do it:
<DirectedGraph xmlns="http://schemas.microsoft.com/vs/2009/dgml">
<Nodes>
<Node Id="Banana" UseManualLocation="True" />
<Node Id="Test" UseManualLocation="True" />
</Nodes>
<Links>
<Link Source="Test" Target="Banana" Priority="10"/>
<Link Source="Test" Target="Green" />
</Links>
<Properties>
<Property Id="Bounds" DataType="System.Windows.Rect" />
<Property Id="UseManualLocation" DataType="System.Boolean" />
</Properties>
<Styles>
<Style TargetType="Link">
<Setter Property="Weight" Expression="Priority" />
</Style>
</Styles>
</DirectedGraph>