Adding a value to a binding in code behind

Question

Hi,

I would like to add a given value (kind of an offset) to a multibinding I have.. This has to be done in code behind..

How should I do this?

Can I use another binding in the multibinding (but to a fixed value rather than a binding property)??

Do you have another idea?

thanks in advance...

Answer 1

If it's a fixed value, you can use the ConverterParameter property of your multibinding to pass your offset:

<Multibinding Converter="{StaticResource MyConverter}" ConverterParameter="10">

The property will end up in the parameter argument of your Convert and ConvertBack methods in your IMultiValueConverter

Answer 2

If it's a dynamic value, you can make a dependency property in the codebehind, and add a binding to that in your multibinding. Every time you update that property (your offset in this case) the multibinding converter will be hit and update appropriately.