Hi,

It looks like NumberSpinner widget use constraints to limit property values on client side, but the constraints are not send from the server. The IntegerEditorDescriptor has only parameterless constructor:

 public IntegerEditorDescriptor()
      : base((object) int.MinValue, (object) int.MaxValue)
    {
    }

I also think that this is strange....

If you need to use values of range property, then you could prepare new editor descriptor that inherits IntegerEditorDescriptor and setup the Min/Max correctly. It's just few lines of code:

 [EditorDescriptorRegistration(TargetType = typeof(int), UIHint = "CustomInteger")]
    [EditorDescriptorRegistration(TargetType = typeof(int?), UIHint = "CustomInteger")]
    public class CustomIntegerEditorDescriptor : IntegerEditorDescriptor
    {
        public override void ModifyMetadata(ExtendedMetadata metadata, IEnumerable<Attribute> attributes)
        {
            base.ModifyMetadata(metadata, attributes);
            var rangeAttribute = attributes.OfType<RangeAttribute>().FirstOrDefault();
            if (rangeAttribute != null)
            {
                var constrains = this.EditorConfiguration["constraints"];
                this.EditorConfiguration["constraints"] = new
                {
                    min = rangeAttribute.Minimum,
                    max = rangeAttribute.Maximum,
                    places = (string)constrains.GetType().GetProperty("places").GetValue(constrains),
                    exponent = (bool)constrains.GetType().GetProperty("exponent").GetValue(constrains)
                };

            }
        }
    }

Then use CustomInteger UiHint on your property and it should work.

Hi,

Thanks for the answer!

Actually you only have to do this (did some (a lot) try and error yesterday), (Here you see the int? that you answered on yesterday ;) ). For some reason it's enough just to register your descriptor and it will understand that you want to send your Range-data annotaition.

[EditorDescriptorRegistration(TargetType = typeof(int?), UIHint = "myOptionalProp")]
public class EditorSelectionEditorDescriptor : EditorDescriptor
{
public EditorSelectionEditorDescriptor()
{

}
}