<telerik:RadMaskedTextBox ID="RadMaskedTextBox2" Runat="server" Mask="<0..255>.<0..255>.<0..255>.<0..255>" ZeroPadNumericRanges="false" PromptChar=""> </telerik:RadMaskedTextBox> Should render 192.168.1.1 instead of 192.168.__1.__1
The complexity of implementing such a feature is very high and there is significant chance of introducing regressions because of it. Moreover, such behavior is going to cause confusion in the user experience because the user will be able to fill in the same patter in different ways without any indication of what is expected and correct.
I currently have a bug request from our user group to solve this. No ideas.