Our immediate need is for the MaskedTextBox.
And have modified my program.cs to add:
// Add services to the container.
builder.Services.AddControllersWithViews()
// Maintain property names during serialization. See:
// https://github.com/aspnet/Announcements/issues/194
.AddNewtonsoftJson(options => options.SerializerSettings.ContractResolver = new Newtonsoft.Json.Serialization.DefaultContractResolver());
// Add Kendo UI services to the services container"
builder.Services.AddKendo();
I copied the code from your demo into the ASP.net 6.0 Page above.
I added data properties to the Index.cshtml.cs model and changed the Value property on each Kendo object to point them. That works fine
The issue is that the formatting is not applied: