private static GridViewColumnCollectionBehaviour GetOrCreateColumnCollectionBehaviour(DependencyObject source)
{
GridViewColumnCollectionBehaviour behaviour = GetColumnCollectionBehaviour(source);
if (behaviour == null)
{
GridView typedSource = source as GridView;
if (typedSource == null)
{
throw new Exception("This property can only be set on controls deriving GridView");
}
behaviour = new GridViewColumnCollectionBehaviour(typedSource);
SetColumnCollectionBehaviour(typedSource, behaviour);
}
return(behaviour);
}
public static void SetColumnCollectionBehaviour(DependencyObject obj, GridViewColumnCollectionBehaviour value)
{
obj.SetValue(ColumnCollectionBehaviourProperty, value);
}
