Decreasing header and item height in Gantt Chart Library and Project Management Library for WPF

We dyanmically increase and header and/or item heights within chart-based list view controls of Gantt Chart Library for WPF or Project Management Library for WPF. However, decreasing them doesn't perform automatically on those components, because the minimum header height of a chart-based list view control is bound to the value of the actual header height values of the internal list view and chart controls by design, and item height is bound to the mimum value between the actual list view item height and the chart item height in a similar manner.

Workarounds are available to resolve these issues, however (in the examples we assumme that you are using GanttChartTaskListView control, but the concept may be used with related components too):

• To allow decreasing HeaderHeight automatically, such as after you removed a scale item from the Scales collection:

  GanttChartTaskListView.MinHeaderHeight = 0;

• To decrease ItemHeight to a specific value manually:

  double decreasedItemHeight = ...;
  for (int i = 0; i < GanttChartTaskListView.BaseNodeListView.Items.Count; i++)
  {
      FrameworkElement element =
          GanttChartTaskListView.BaseNodeListView.ItemContainerGenerator.ContainerFromIndex(i) as FrameworkElement;
      if (element == null)
          continue;
      element.Height = decreasedItemHeight;
  }
  GanttChartTaskListView.ItemHeight = decreasedItemHeight;