public static void SetIsVerticalConnectingLineOf(Line element, TreeViewItem value)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
element.SetValue(IsVerticalConnectingLineOfProperty, value);
}
/// <summary>
/// Gets the value of the ConnectingLineInfo attached property for a
/// specified TreeViewItem.
/// </summary>
/// <param name="element">
/// The TreeViewItem from which the property value is read.
/// </param>
/// <returns>
/// The ConnectingLineInfo property value for the TreeViewItem.
/// </returns>
internal static TreeViewItemConnectingLineInfo GetConnectingLineInfo(TreeViewItem element)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
// Get the info and create on demand if necessary
TreeViewItemConnectingLineInfo info = element.GetValue(ConnectingLineInfoProperty) as TreeViewItemConnectingLineInfo;
if (info == null)
{
info = new TreeViewItemConnectingLineInfo(element);
element.SetValue(ConnectingLineInfoProperty, info);
}
return info;
}
public static void SetIsHeaderOf(FrameworkElement element, TreeViewItem value)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
element.SetValue(IsHeaderOfProperty, value);
}
public static void SetIsExpanderButtonOf(ToggleButton element, TreeViewItem value)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
element.SetValue(IsExpanderButtonOfProperty, value);
}
