Hello Tim English,
You can try to use the ValueChanged event and check if the new value is -1 and then set the Value to null. Note that you have to change the minimum to be -1. The code will look something like:
sender, RadRangeBaseValueChangedEventArgs e)
(e.NewValue == -1)
However currently when the Value=null and press Up button the Value goes to 1 instead of 0 and this can't be handled with similar code like the one above. I have logged this as a bug ID 1549 in PITS
, where you can follow its progress. With the fix and the above code you will be able to achieve your scenario.
Hope this is acceptable for you.
the Telerik team
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