RadMaskedEditBox Numeric with Decimals...Need Help.

Hello Mark,

There is no particular way to limit the value. Still, there are a few options which you could consider.

• You can change the MaskType to Standart. Then you can change the Mask property using the standard characters. For example, you can set the Mask property to 099. This way the user can enter only one digit and the value will be in the range from 1 to 999. However, you have double numbers. Check the next approach.

• You could consider using Regex. This approach will require manually creating a Regex expression that will accept digits only and have a range. However, this approach will require extra work in creating the expressions to match specific double numbers range.

• You could consider using Validation. If you subscribe for example, to the Validating event you can check the value and Cancel the event. This way the user can't move to another control until it enters a valid value. You can also use Validation Provider to notify the user with a message why the value is invalid.
  

I think that the regex or validation provider will work for you. For the regex, I have prepared a sample one for you that matches numbers between 100 and 999.9. It may match some other combination, but I think you can use it as a starting point. You could limit the input key, for example, not allowing letters.

this.radMaskedEditBox2.Mask = "\\b(?:[1-9]\\d{2}(?:\\.\\d)?|999\\.9)\\b";
this.radMaskedEditBox2.MaskType = Telerik.WinControls.UI.MaskType.Regex;

When you enter your number and move the focus to another control, the validation will be triggered and a red mark will appear on the right showing that the value is not valid.

Another approach as I mentioned is to use the Validation Provider. 

I hope that one of these approaches will work for you.

Regards,
Dinko | Tech Support Engineer
Progress Telerik