Hi Indrajith
Thank you so much for this replyI still have the problem
I tried your suggestion and cleared the nuget cache using the executable file and the command line "nuget local all -Clear"
I'm using Visual Studio 2019 and either with Edge or Chrome I have this page starting your sample
If then I click on "Ok" I receive this strange page
I have good news
the problem has been solved in my PC updating to Blazor 18.2.0.57 !!!
It was the same in DateTimePicker and in DateRange where the calendar button was showed but clicking on it the calendar didn't appear.
Now everything is working fine
Thank a lot for the support