What I need is a way to make the DatePicker show the weeknumber correctly, right now it is allways calculating the weeknumer based on the en-US culture, I need it to use the Swedish and Other European cultures.
In the attached image you can see the DatePicker from Syncfusion says weeknumber "2" for jan 4-10, but in the "backgroudn" you can see that outlook is correctly displaying weeknumber "1" for jan 4-10 (Swedish culture).

.
So how do I configure the DatePicker to calculate the Weeknumber with any other culture than en-US.
The prefered solution would be that it automatically follows the CurrentCulture and that I don't have to set it manually like.
I am running WebAssemly if that makes any differens.