Hi Dave,
Thanks for your interest on Syncfusion Products.
With regards to your query on creating a link by directly connecting form one node to another, we have created a sample which is attached with this post.
In this sample, click the ‘Straight’ button from the top left corner of the screen and start connecting from one node to another.
Please let us know if you have any further queries.
Regards,
Maria Amal Raj T,
Diagram WPF&Silverlight Team,
Syncfusion-Chennai.
NodeConnectionEnabledDemo1458266449_e37f4e1f.zip