如何通过一个整数作为ConverterParameter? [英] how to pass an integer as ConverterParameter?
本文介绍了如何通过一个整数作为ConverterParameter?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我试图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}" />
和我的转换器是:
[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;
}
}
的
问题是,当我的转换器被称为参数是字符串。我需要它是一个整数。当然,我可以解析字符串,但我一定要?
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
thanks for any help konstantin
推荐答案
下面雅去!
<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>
关键是要包括基本系统类型名称空间,然后写入至少ConverterParameter的元素结合的形式。
The trick is to include the namespace for the basic system types and then to write at least the ConverterParameter binding in element form.
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