Why diagram nodes or connectors are not properly displayed in a web page?

Why are diagram nodes or connectors not properly displayed on a web page?

You should add the correct HTTP handler in the web.config file of your application for the model to render the nodes properly. Refer to the below code for a correct HTTP handler.

<httphandlers>

<add verb="*" path="ImgRequest.ashx" type="Syncfusion.Web.UI.WebControls.Diagram.NodeRenderHandler, Syncfusion.Diagram.Web, Version=7.103.0.21, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89"/>

</httphandlers>

For PaletteGroupBar and OverviewControl, you should add the following HTTP handlers.

<add verb="*" path="PaletteImgRequest.ashx" type="Syncfusion.Web.UI.WebControls.Diagram.ThumbNodeRenderHandler, Syncfusion.Diagram.Web, Version=7.103.0.21, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89"/>

<add verb="*" path="OverviewImgRequest.ashx" type="Syncfusion.Web.UI.WebControls.Diagram.OverviewDocumentRenderHandler, Syncfusion.Diagram.Web, Version=7.103.0.21, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89"/>

Conclusion

I hope you enjoyed learning why diagram nodes or connectors are not properly displayed on a web page.

You can refer to the WinForms Diagram feature tour page to learn about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our WinForms Diagram example to understand how to create and manipulate data.

For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion®, you can try our 30-day free trial to check out our other controls.

If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forums, Direct-Trac, or feedback portal. We are always happy to assist you!