Update node label position

[Witold Slirz]

Hi,
Im using this code to calculate node's label position:

label.Position = Position.Custom;
label.OffsetX = node.Size.Width / 2;
label.OffsetY = node.Size.Height + 20;

How to recalculate label position automatically when user resize node?

[Pandi Murugan A]

Hi Witold,

Thank you for your interest in Syncfusion Products.

We suggest you to use Diagram DocumentEventSink's SizeChanged event to update the Node's Label position. Please refer the below code snippet.

[C#]
public Form1()
        {
            InitializeComponent();
            ((DocumentEventSink)diagram1.Model.EventSink).SizeChanged+=new SizeChangedEventHandler(Form1_SizeChanged);
        }
 
 void Form1_SizeChanged(SizeChangedEventArgs evtArgs)
        {
//update the label position here
            PathNode node = evtArgs.NodeAffected as PathNode;
            if (node.Labels.Count > 0)
                if (node.Labels[0] != null)
                {
                    node.Labels[0].OffsetX = node.Size.Width / 2;
                    node.Labels[0].OffsetY = node.Size.Height + 20;
                }                
        }            

For your convenience, we have created a simple sample and the same can be downloaded from below link.

LabelPosition648179222.zip

Please let me know if you have any concerns.

Regards,
Pandi Murugan A