private DependencyObject GetTopMostParent(RadioTextblock radioTextblock)
{
DependencyObject current = radioTextblock;
while (current != null)
{
var cParent = VisualTreeHelper.GetParent(current);
if (cParent == null || cParent == current)
{
break;
}
current = cParent;
}
return(current);
}
private void RestoreOtherBackgrounds(RadioTextblock radioTextblock)
{
var topParent = GetTopMostParent(radioTextblock);
var controlsWithGroup = GetChildrenRecursive <RadioTextblock>(topParent).ToLookup(d => (string)d.GetValue(GroupProperty));
var similar = controlsWithGroup[radioTextblock.Group];
foreach (var match in similar)
{
if (match == radioTextblock)
{
match.Background = ActiveColor;
}
else
{
match.Background = match.RestorationColor;
}
}
}
