Hi Scary
Thanks for using Syncfusion products.
We have created a sample to achieve your requirement and it is available in the below link for download. Please refer the code snippet and online UG documentation link below which represent how to create a text node.
Online UG documentation link:http://help.syncfusion.com/ug/aspnetmvc/Documents/nodeshapes.htm
Code snippet:
//creation of diagram properties
DiagramProperties model = new DiagramProperties();
//creation of text node
TextNode node = new TextNode();
TextBlock block = new TextBlock();
block.Text = "TextNode";
node.TextBlock = block;
//adding text node into model
model.Nodes.Add(node);
Sample:http://www.syncfusion.com/downloads/support/forum/119743/ze/textnodesamplemvc-1538695126
Please let me know if any concerns.
Regards,
Shyam G