What effect, if anything, does putting a slash in from of the field bound to the control, have? For example:
<
telerik:RadMaskedNumericInput
Grid.Column
=
"1"
HorizontalAlignment
=
"Left"
Grid.Row
=
"2"
Margin
=
"5,0,0,0"
VerticalAlignment
=
"Bottom"
Mask
=
"####"
FontFamily
=
"Century Gothic"
FontSize
=
"16"
Value
=
"{Binding /ProbationStartYear}"
IsClearButtonVisible
=
"False"
AutoFillNumberGroupSeparators
=
"False"
/>