Hi Sumit,
Thanks for contacting Syncfusion support.
Currently , we don’t have support to show user handles around node for making connections in WinForms. But, we can achieve this requirement with DrawingTool and “AllowConnectOnDrag” property of the Port.
We have created a simple sample to represent this. Please refer to the sample from the below link.
In this sample, we have enabled drawing tool and set AllowConnectOnDrag as true for center port of the Node. So, the draggable connector will be created when click and drag on the Node.
Regards,
Ramya T