绑定路径中的加法 [英] addition in binding Path

问题描述

是否可以在wpf绑定路径中进行加法运算?

像这样的东西:

Hi,

Is it possible to do addition in wpf binding path?

Something like this:

Width="{Binding ElementName=Grid1, Path=ActualWidth + 20}"

[edit]仅标记-OriginalGriff [/edit]

[edit]Tags only - OriginalGriff[/edit]

推荐答案

您最好的选择是使用类似以下的转换器:

Your best bet would be to use a converter something like this :

[ValueConversion(typeof(double), typeof(double))]
    class AddWidthConverter:IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            double currentValue = (double)value;
            return currentValue + 70;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

然后在Window.Resources中声明转换器，然后像这样在xaml中使用它:

Then declare your converter in your Window.Resources and then use it in your xaml like this :

Width="{Binding ElementName=txtTest, Path=ActualWidth, Converter={StaticResource AddWidth}

这篇关于绑定路径中的加法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！