How do I uncheck all radio buttons at one time? ... Continued

Clyde Eisenbeis

1y1.2kWPF

c-sharpcorner.com/forums/how-do-i-uncheck-all-radio-buttons-at-one-time

XAML

XAML.CS

using System.Windows.Controls;

foreach (var child in FirstGroupBox.Children) 
{
    if (child is RadioButton rb)
    {
        rb.IsChecked = false;// Uncheck each RadioButton
    }
}

results in error message "GroupBox does not contain a definition for 'Children' ...." => snipboard.io/9dnwLZ.jpg

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Muhammad Imran Ansari1y ago
Hi Clyde,

The error occurs because GroupBox does not have a Children property directly. Instead, the GroupBox typically contains a single child element, which is often a Panel (like StackPanel, Grid, etc.). To access the radio buttons, you need to first access the child panel within the GroupBox, then iterate over the elements in that panel. Here is the updated code but you can use the the element accordingly:
```
  
    
    
    
  
```
XAML.CS
```
using System.Windows.Controls;

// Access the child panel inside the GroupBox
var panel = FirstGroupBox.Content as Panel;
if (panel != null)
{
    foreach (var child in panel.Children)
    {
        if (child is RadioButton rb)
        {
            rb.IsChecked = false; // Uncheck each RadioButton
        }
    }
}
```
Thank you!