hi
how to disable many of keys in raddatetimepicker?
I'm using the following code, but I did not give the desired result 

private void DTP_bDate_KeyPress(object sender, KeyPressEventArgs e)
        {
            e.Handled = char.IsDigit(e.KeyChar);
        }

Hello Amir,

Thank you for contacting Telerik Support.

If I understand correctly your requirement, you are trying to stop the user to enter some digits in the RadDateTimePicker. You can achieve this via the 
RadDateTimePicker.DateTimePickerElement.TextBoxElement.KeyPress event:


If it is not the exact requirement, please specify more details about the expected behavior. Thus, we would be able to investigate the precise case and suggest an appropriate solution.

I hope this information helps. Should you have further questions, I would be glad to help.

Regards,
Desislava
Telerik