Bind StackPanel Visiblility to Radiobutton IsChecked

First steps with Silverlight …

The context :

I have some radiobuttons, and a stackpanel I want to be visible if one or the radiobutton is checked

The solution I found :

1) Write the code

The radio buttons

// ...

<RadioButton Name="SomeRadio"  IsChecked="True" Content="some radio/>
 <RadioButton Name="WantedRadio" Content="the wanted radio"/>

// ...

The StackPanel

// ...

<StackPanel Name="ThePanel">

// some content


2) Convert

Since the Visibility property type  is an enum and the Ischeckd a boolean, we need a converter

Create it : you must implement the IValueConverter Inerface which is in the “System.Windows.Data” namespace

using System;
using System.Windows;
using System.Windows.Data;

namespace TheNamespace
 public class VisibilityConverter : IValueConverter
 public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
// just in case
if (value == null)
return Visibility.Collapsed;

bool ischecked = System.Convert.ToBoolean(value);
return ischecked ? Visibility.Visible : Visibility.Collapsed;

// had to be implemented
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
throw new NotImplementedException();

Reference the namespace of the converter in the xaml file


Add the class as ressource for the user control


 <local:VisibilityConverter x:Key="VisibilityConverter" />

And now you can use it to bind the properties

Visibility="{Binding IsChecked,  ElementName=WantedRadio, Converter={StaticResource  VisibilityConverter}}">

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