Events in .NET MAUI Radio Button (SfRadioButton)

StateChanged event

This event occurs when the value (state) of the IsChecked property is changed by touching the check box or setting the value to the IsChecked property using XAML or C# code. The event arguments are of type StateChangedEventArgs and expose the following property:

• IsChecked : The new value(state) of the IsChecked property.

XAML

<syncfusion:SfRadioGroup x:Name="radioGroup">
    <syncfusion:SfRadioButton x:Name="check" Text="Checked State" IsChecked="True" StateChanged="RadioButton_StateChanged"/>
    <syncfusion:SfRadioButton x:Name="uncheck" Text="Unchecked  State" StateChanged="RadioButton_StateChanged"/>
</syncfusion:SfRadioGroup>

C#

SfRadioGroup radioGroup = new SfRadioGroup();
SfRadioButton check = new SfRadioButton();
check.Text = "Checked State";
check.IsChecked = true;
check.StateChanged += RadioButton_StateChanged;
SfRadioButton uncheck = new SfRadioButton();
uncheck.Text = "Unchecked State";
uncheck.StateChanged += RadioButton_StateChanged;
radioGroup.Children.Add(check);
radioGroup.Children.Add(uncheck);
this.Content = radioGroup;

C#

private void RadioButton_StateChanged(object sender, Syncfusion.Maui.Buttons.StateChangedEventArgs e)
{
    if (e.IsChecked.HasValue && e.IsChecked.Value)
    {
        (sender as SfRadioButton).Text = "Checked State";
    }
    else if (e.IsChecked.HasValue && !e.IsChecked.Value)
    {
        (sender as SfRadioButton).Text = "Unchecked State";
    }
}

StateChanging event

The StateChanging event is triggered when the state of the IsChecked property is about to change by tapping the RadioButton control. The event arguments are of type StateChangingEventArgs and provide the following properties:

• IsChecked : The new value(state) of the IsChecked property.
• Cancel : Gets or sets a value indicating whether the event should be canceled.

XAML

<syncfusion:SfRadioGroup x:Name="radioGroup">
    <syncfusion:SfRadioButton x:Name="check" Text="Checked State" IsChecked="True" StateChanging="OnStateChanging"/>
    <syncfusion:SfRadioButton x:Name="uncheck" Text="Unchecked State"/>
</syncfusion:SfRadioGroup>

C#

SfRadioGroup radioGroup = new SfRadioGroup();
SfRadioButton check = new SfRadioButton();
check.Text = "Checked State";
check.IsChecked = true;
check.StateChanging += OnStateChanging;
SfRadioButton uncheck = new SfRadioButton();
uncheck.Text = "Unchecked State";
uncheck.StateChanging += OnStateChanging;
radioGroup.Children.Add(check);
radioGroup.Children.Add(uncheck);
this.Content = radioGroup;

C#

private void OnStateChanging(object sender, StateChangingEventArgs e)
{
    e.cancel=true;
}