To work this around, you can hide the pointer over background completely. To do this, you can edit the ControlTemplate of RadListView item and remove the Setter from the PointerOver Visual State.
A possible workaround would be the following one:
private void RadTreeListView_Filtering(object sender, Telerik.Windows.Controls.GridView.GridViewFilteringEventArgs e)
{
var treeListView = sender as RadTreeListView;
var internalColumns = treeListView.GetType().GetProperty("InternalColumns", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance).GetValue(treeListView);
internalColumns.GetType().GetProperty("ColumnWidthsCalculationPending", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).SetValue(internalColumns, true);
}
private void RadTreeListView_Filtered(object sender, Telerik.Windows.Controls.GridView.GridViewFilteredEventArgs e)
{
Dispatcher.BeginInvoke(new Action(() =>
{
var treeListView = sender as RadTreeListView;
var internalColumns = treeListView.GetType().GetProperty("InternalColumns", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance).GetValue(treeListView);
internalColumns.GetType().GetProperty("ColumnWidthsCalculationPending", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).SetValue(internalColumns, false);
}), System.Windows.Threading.DispatcherPriority.Loaded);
}
The horizontal scrollbar of RadTreeListView is displayed even the setup suggest that it should not be. For example, this happens if you have a single column with its Width set to * which means that the RadGridView should span in the available space without the need of displaying a horizontal scrollbar. To recreate this the RowIndicatorVisibility property should be set to Collapsed. Additional to that there should be a hierarchy and the items should be expanded.
To work this around, you can set a fixed Width for the column. If you want this to be dynamic you can calculate the width on SizeChanged of RadTreeListView
Steps to reproduce:
1. Click filter icon in column
2. Enter invalid value in filter input
3. Press Filter, the value gets underlined, suggesting some kind of error.
4. Click the place marked 1 and then 2.
This time, it seems a message appears about the cause of the error, but it doesn’t fit inside the control.
