Thank you for contacting Telerik Support.
You can restrict the user to make time inputs in 15 minute steps as follows:
radTimePicker1.Step = 15;
DateTime(1,1,1,radTimePicker1.Value.Value.Hour, 0 ,0);
((MaskDateTimeProvider)radTimePicker1.TimePickerElement.MaskedEditBox.Provider).MinutesStep = 15;
radTimePicker1.TimePickerElement.MaskedEditBox.KeyPress += MaskedEditBox_KeyPress;
sender, KeyPressEventArgs e)
(((MaskDateTimeProvider)radTimePicker1.TimePickerElement.MaskedEditBox.Provider).SelectedItemIndex == 2)
The user is allowed to use the arrow keys for minutes navigation in 15 minutes interval. But the functionality to type in directly the minutes numbers is disabled due to the complexity of handling specific cases.
I hope this information helps. Should you have further questions, I would be glad to help.
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