Question

I currently have two text boxes which accept any number. I have a text block that takes the two numbers entered and calculates the average.

I was wondering if there was a way I could bind this text block to both text boxes and utilize a custom converter to calculate the average? I currently am catching the text changed events on both text boxes and calculating the average that way, but I am under the assumption data binding would be more efficient and easier.

Answer 1

You’re looking for MultiBinding.

Your XAML will look something like this:

<TextBlock>   <TextBlock.Text>     <MultiBinding Converter='{StaticResource myConverter}'>       <Binding Path='myFirst.Value' />       <Binding Path='mySecond.Value' />     </MultiBinding>   </TextBlock.Text> </TextBlock> 

With reasonable replacements for myConverter, myFirst.Value, and mySecond.Value.