private static ColumnVisibilityBehavior GetOrSetBehavior(DependencyObject sender)
{
ColumnVisibilityBehavior behavior = GetColumnVisibilityBehavior(sender);
if (behavior == null)
{
behavior = new ColumnVisibilityBehavior();
SetColumnVisibilityBehavior(sender, behavior);
}
return behavior;
}
private static void SetColumnVisibilityBehavior(DependencyObject obj, ColumnVisibilityBehavior value)
{
obj.SetValue(ColumnVisibilityBehaviorProperty, value);
}
