如何将整数作为 ConverterParameter 传递? [英] how to pass an integer as ConverterParameter?

问题描述

我正在尝试绑定到一个整数属性:

I am trying to bind to an integer property:

<RadioButton Content="None"
             IsChecked="{Binding MyProperty,
                         Converter={StaticResource IntToBoolConverter},
                         ConverterParameter=0}" />

我的转换器是:

[ValueConversion(typeof(int), typeof(bool))]
public class IntToBoolConverter : IValueConverter
{
    public object Convert(object value, Type t, object parameter, CultureInfo culture)
    {
        return value.Equals(parameter);
    }

    public object ConvertBack(object value, Type t, object parameter, CultureInfo culture)
    {
        return value.Equals(false) ? DependencyProperty.UnsetValue : parameter;
    }
}

问题是当我的转换器被调用时，参数是字符串.我需要它是一个整数.我当然可以解析字符串，但我必须这样做吗?

the problem is that when my converter is called the parameter is string. i need it to be an integer. of course i can parse the string, but do i have to?

感谢您的帮助康斯坦丁

推荐答案

给你！

<RadioButton Content="None"
             xmlns:sys="clr-namespace:System;assembly=mscorlib">
    <RadioButton.IsChecked>
        <Binding Path="MyProperty"
                 Converter="{StaticResource IntToBoolConverter}">
            <Binding.ConverterParameter>
                <sys:Int32>0</sys:Int32>
            </Binding.ConverterParameter>
        </Binding>
    </RadioButton.IsChecked>
</RadioButton>

诀窍是包含基本系统类型的命名空间，然后至少以元素形式编写 ConverterParameter 绑定.

The trick is to include the namespace for the basic system types and then to write at least the ConverterParameter binding in element form.

这篇关于如何将整数作为 ConverterParameter 传递?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！