Question

I have a RadioButton and a TextBox inside one StackPanel as shown below:

  <StackPanel Orientation="Horizontal">
        <RadioButton x:Name="rbSelectedQuantity" GroupName="CardQuantity"
          FontSize="14" Margin="5"
          Content="Selected Quantity">
        </RadioButton>

        <TextBox x:Name="txtSelectedQuantity" Width="50" Margin="5" TextAlignment="Right"
        Text="0"></TextBox>
  </StackPanel>

Here is My Scenario: If I click inside the TextBox, my Radio Button should be checked automatically.

How should I do this?

Answer 1

Handle the GotFocus Event for the TextBox and set the RadioButton IsChecked property to True

private void txtSelectedQuantity_GotFocus(object sender, RoutedEventArgs e)
    {
        rbSelectedQuantity.IsChecked = True;
    }