using UWP.Markup;
ContentDialog dialog = new ContentDialog()
.Title("Save your work?")
.PrimaryButtonText("Save")
.SecondaryButtonText("Don't Save")
.CloseButtonText("Cancel")
.DefaultButton(ContentDialogButton.Primary)
.Content(new ContentDialogContent());
var result = await dialog.ShowAsync();
// doc ⬇️
WinUI Methods