wpf 绑定时如何在xaml中进行计算？
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How to do calculation in xaml while binding?
提问by user763554
I can bind a label to a slider as shown below:
我可以将标签绑定到滑块，如下所示：
<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.
如何将另一个标签绑定到同一个滑块，显示值为滑块值的 30%？如何在 xaml 中而不是在我的代码中进行计算？谢谢。
采纳答案by H.B.
You cannot do the calculation in XAML, you could however apply some converterwhich does it for you.
你不能在 XAML 中进行计算，但是你可以应用一些为你做的转换器。
This question might be relevant: How do you change a bound value, reverse it, multiply it, subtract from it or add to it?
这个问题可能是相关的：您如何更改绑定值、反转它、乘以它、从中减去或添加到它？
回答by xmedeko
There are already a few projects which bring expressions to Bindigs, e.g. see CalcBindingor QuickConverter.
已经有一些项目将表达式引入 Bindigs，例如参见 CalcBinding或QuickConverter。
