试图让IsEnabled绑定到Dependency Property

时间:2010-09-10 01:38:13

标签: c# .net wpf binding isenabled

我知道这个代码出错了。我希望TextBox在选择相关的RadioButton时启用,然后当选择另一个单选按钮时,我希望它为Enabled = False。我创建了一个ProxyMode依赖项属性,并根据是否选择了Proxy来更改getter以获取它的bool值。似乎不起作用......任何想法?

// Proxy Host Name
public string Proxy
{
  get { return (string)GetValue(ProxyProperty); }
  set { SetValue(ProxyProperty, value); }
}

public static readonly DependencyProperty ProxyProperty =
       DependencyProperty.Register("Proxy", typeof(string), typeof(ConfigWindowViewModel), new UIPropertyMetadata("[e.g. proxy.mycompany.com]"));

public bool ProxyMode
{
  get { return Proxy == "Proxy"; }
  set { SetValue(ProxyModeProperty, value); }
}

public static readonly DependencyProperty ProxyModeProperty =
       DependencyProperty.Register("ProxyMode", typeof(bool), typeof(ConfigWindowViewModel));

和XAML

<StackPanel Grid.Column="0" Margin="2">
  <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
    <RadioButton IsChecked="{Binding Path=Mode, Converter={StaticResource enumBooleanConverter}, ConverterParameter=Proxy}"
                  VerticalAlignment="Center"
                  Padding="2,0,10,0">Proxy
    </RadioButton>
    <TextBox Text="{Binding Path=Proxy}" 
             IsEnabled="{Binding Path=ProxyMode}"
             Width="Auto"
             Name="ProxyHostTextBox"
             VerticalAlignment="Center"
             MinWidth="150" 
    />
  </StackPanel>
  <RadioButton IsChecked="{Binding Path=Mode, Converter={StaticResource enumBooleanConverter}, ConverterParameter=Direct}">Direct</RadioButton>
</StackPanel>

3 个答案:

答案 0 :(得分:4)

根据是否选中代理RadioButton来启用/禁用文本框的最简单方法是将TextBox的IsEnabled属性直接绑定到代理RadioButton的IsChecked属性。假设代理RadioButton被命名为“proxy”:

<TextBox Text="{Binding Path=Proxy}" IsEnabled="{Binding ElementName=proxy, Path=IsChecked}"/>

如果您要将RadioButton控件链接起来,以便一次只能选择一个,则需要将GroupName属性设置为两者(对于所有链接的RadioButton控件,它应该相同)。 / p>

如果您还有其他问题,请与我们联系。

答案 1 :(得分:2)

与此问题的第二个版本一样:

<RadioButton x:Name="RadioButton2" />
<TextBox IsEnabled="{Binding IsChecked, ElementName=RadioButton2}" />

答案 2 :(得分:0)

我认为我想出了一个更好的方法来做到这一点 - 所以问题可能不是一个好问题 - 以下没有依赖属性似乎没问题

        <StackPanel Grid.Column="0" Margin="2">
            <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
                <RadioButton IsChecked="{Binding Path=Mode, Converter={StaticResource enumBooleanConverter}, ConverterParameter=Proxy}" VerticalAlignment="Center" Padding="2,0,10,0" Name="ProxyModeRadioButton">Proxy</RadioButton>
                <TextBox Text="{Binding Path=Proxy}" 
                         IsEnabled="{Binding ElementName=ProxyModeRadioButton, Path=IsChecked}"
                         Width="Auto" Name="ProxyHostTextBox" VerticalAlignment="Center" MinWidth="150" 
                />

            </StackPanel>   
            <RadioButton IsChecked="{Binding Path=Mode, Converter={StaticResource enumBooleanConverter}, ConverterParameter=Direct}">Direct</RadioButton>
        </StackPanel>