Hi Sao,
The code available in the source tab of our online Blazor
demo includes code that supports theme switching (ThemeHelper class) and
sample rendering (SampleBaseComponent class). These codes are not
required to run the Blazor Maps component because they are only included to
showcase the samples in Blazor Sample Browser.
Meanwhile, for your convenience, we have created a simple
sample with the Blazor Maps component, which can be downloaded from the link
below.
https://www.syncfusion.com/downloads/support/directtrac/general/ze/BlazorMaps1640768021
If you want to create your own Blazor Maps application,
please see our "Getting Started" online documentation at the link
below.
https://blazor.syncfusion.com/documentation/maps/getting-started
Please let us know if you need any further assistance.
Regards,
Indumathi R.