weekday selector with datetimerpicker

[gbr]

Hi,

I want to use a daytimepicker control to choose the interval of an automatical action in my application. This works fine if the user decides for daily action (then the time can be chosen with

dtp.CustomFormat = "HH:mm";

However if the user decides for a weekly interval only weekdays shall be choosen. With

dtp.CustomFormat = "dddd";

the day of the week is displayed, but one cannot change it.

How can I configure this control to show only the days of the week and let the user select it? (dtp.ShowUpDown=true is set)

Thanks in advance,
gbr