How to do calculation in xaml while binding?

问题

I can bind a label to a slider as shown below:

<Label Name="lblTest" Content="{Binding ElementName=slider1, Path=Value}"/>

How do I bind another label to the same slider with display value of, say, 30% of the value of slider? How do I do the calculation in xaml and not in my code? Thanks.

回答1:

You cannot do the calculation in XAML, you could however apply some converter which does it for you.

This question might be relevant: How do you change a bound value, reverse it, multiply it, subtract from it or add to it?

回答2:

There are already a few projects which bring expressions to Bindigs, e.g. see CalcBinding or QuickConverter.

来源：https://stackoverflow.com/questions/8874404/how-to-do-calculation-in-xaml-while-binding