Hi Blaze,
Thank you for your interest in Syncfusion Products.
It is possible to create a Diagram Web Control at run time and add nodes to it. Please find the code snippet that illustrates this:
DiagramWebControl diag = new DiagramWebControl();
diag.Height = 700;
diag.Width = 700;
diag.BackColor = System.Drawing.Color.AliceBlue;
diag.EnableNodeSelection = true;
diag.EnableDragDrop = false;
this.form1.Controls.Add(diag);
Syncfusion.Windows.Forms.Diagram.Rectangle r = new Syncfusion.Windows.Forms.Diagram.Rectangle(10, 10, 100, 100);
r.FillStyle.Color = Color.Blue;
r.EnableCentralPort = true;
diag.Model.AppendChild(r);
Please find the simple sample in the following link:
http://websamples.syncfusion.com/samples/Diagram.Web/6.1.0.34/F71967/main.htmPlease let me know if any concerns.
Regards,
Fathima