New Post: SingleUpDown Validation

Hi,

SingleUpDown includes a property "AllowInputSpecialValues" which is an enum with the following options :
None = 0,
NaN = 1,
PositiveInfinity = 2,
NegativeInfinity = 4,
AnyInfinity = PositiveInfinity | NegativeInfinity,
Any = NaN | AnyInfinity

Maybe it could help.

If not, using the following xaml doesn't show a red border when SingleUpDown is empty ;

<Grid>
    <xctk:SingleUpDown />
<Grid/>