Hi Vincent,
Thanks for your interest in our Syncfusion products.
By default we will showcase only the built-in widgets in Dashboard Designer. But you can able to import the custom widget to the Dashboard Designer by following below steps.
1. Select the Widget menu and then choose Manage Custom Widgets option.
2. In the below window click on Add Widget button to import the custom widget in Dashboard Designer. If you added the custom widget already please delete the existing widget and add the widget again.
3. Then you can use the widget in your Dashboard Designer under specified location. For more information about the widget importing please refer our UG documentation
link.
For more information about the custom widget please refer the
link.
We have also developed and shipped few custom widgets with our dashboard designer build for customer references and Custom widgets are shipped in the below location.
location: C:\ProgramData\Syncfusion\DashboardDesigner\Custom Widgets
Please let us know if you have any queries.
Regards,
Ranjani R.