New to Telerik UI for WPF? Start a free 30-day trial

Using RadioButton ClickMode and Resolving Selection Flipping in RadListBox DataTemplate

Updated on Sep 23, 2026

Environment

Version	Product	Author
2026.3.812	RadRadioButton	Desislava Yordanova

When creating a DataTemplate in code (using FrameworkElementFactory or XamlReader) that hosts a RadioButton (or RadRadioButton) inside an items control such as RadListBox, clicking the radio button causes the bound property (such as IsSelected or IsChecked) to be invoked twice: first receiving true, and then immediately reverting to false.

Developers often ask about RadioButton.ClickModeProperty to check whether changing the click timing (press vs. release) resolves the double-invocation or selection-reverting behavior.

What is RadioButton.ClickModeProperty?

ClickModeProperty is a dependency property inherited by RadioButton and RadRadioButton from System.Windows.Controls.Primitives.ButtonBase:

ClickMode.Release (Default): The Click / Checked event fires when the mouse button is pressed and then released over the button.
ClickMode.Press: The event fires immediately as soon as the mouse button is pressed down.
ClickMode.Hover: The event fires when the mouse pauses over the button.

In code (such as with FrameworkElementFactory), you can set it via:

csharp

feRadio.SetValue(System.Windows.Controls.Primitives.ButtonBase.ClickModeProperty, ClickMode.Press);

In XAML, you can set it directly on the control:

xaml

<RadioButton Content="Option 1" ClickMode="Press" />

While changing ClickMode to Press changes the input event timing, it does not prevent IsSelected from reverting to false if the underlying bindings or group definitions conflict with RadListBox selection mechanics.

Cause of the Selection Reverting to False

When a RadioButton is hosted inside a RadListBox.ItemTemplate, three common issues trigger the immediate true -> false flip:

Bind the correct selection property: SelectedValuePath accepts a string property path. If you need a binding, use the RadListBox.SelectedValueBinding property:
C#
```
feListBox.SetBinding(RadListBox.SelectedValueBindingProperty, new Binding("Id"));
```
Otherwise, set SelectedValuePath with a string literal:
C#
```
feListBox.SetValue(RadListBox.SelectedValuePathProperty, "Id");
```
Shared GroupName Across Items: Setting a hardcoded GroupName="BindingGroup" on the RadioButton inside the template causes all radio buttons in every row to share a single mutually exclusive group. When clicking an item, WPF attempts to deselect other items, conflicting with the list box's item container selection and triggering a deselection cascade.
Unsynchronized ItemContainerStyle: When clicking the radio button, the RadioButton.IsChecked updates, but the container (RadListBoxItem.IsSelected) does not update unless synchronized via ItemContainerStyle with Mode=TwoWay. If the container selection is not synchronized, subsequent mouse or focus events from the parent RadListBoxItem override the check state.

Solution

To properly embed a RadioButton inside RadListBox without selection conflicts:

1. Synchronize Selection via `ItemContainerStyle`

Bind RadListBoxItem.IsSelectedProperty to your item's IsSelected property using BindingMode.TwoWay. Do not bind SelectedValuePath to a Binding object:

csharp

// ItemContainerStyle to sync selection between model and RadListBoxItem
var itemStyle = new Style(typeof(Telerik.Windows.Controls.RadListBoxItem));
itemStyle.Setters.Add(new Setter(
    Telerik.Windows.Controls.RadListBoxItem.IsSelectedProperty,
    new Binding("IsSelected") { Mode = BindingMode.TwoWay }));

feListBox.SetValue(Telerik.Windows.Controls.RadListBox.ItemContainerStyleProperty, itemStyle);

2. Configure the RadioButton Template Without Conflicting Groups

In the RadioButton factory, bind IsChecked to IsSelected with BindingMode.TwoWay. If you only have one radio button per row representing that row's selection, omit GroupName or bind GroupName to a unique identifier per item (such as item ID):

csharp

FrameworkElementFactory feRadio = new FrameworkElementFactory(typeof(RadioButton));
feRadio.SetBinding(RadioButton.ContentProperty, new Binding("Description1"));
feRadio.SetBinding(RadioButton.IsCheckedProperty, new Binding("IsSelected") 
{ 
    Mode = BindingMode.TwoWay, 
    UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged 
});

// Optional: Set ClickMode if you want the radio button to respond on mouse press
feRadio.SetValue(System.Windows.Controls.Primitives.ButtonBase.ClickModeProperty, ClickMode.Press);

DataTemplate itemTemplate = new DataTemplate();
itemTemplate.VisualTree = feRadio;
itemTemplate.Seal();

feListBox.SetValue(Telerik.Windows.Controls.RadListBox.ItemTemplateProperty, itemTemplate);

3. Remove `SelectedValuePath` Binding

If you do not need SelectedValue, omit both SelectedValue and SelectedValuePath. If you do use them, pass a string literal representing the property name:

csharp

// Only if using SelectedValue:
feListBox.SetValue(Telerik.Windows.Controls.RadListBox.SelectedValuePathProperty, "IsSelected");