RibbonComboBox (WPF) stays disabled after enabling the Ribbon

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C#

WPF

Hi,

I've encountered a severe problem with the RibbonComboBox: the control simply refuses to re-enable correctly and stays in a disabled state. Up to now I didn't find a proper workaround for this...

Here a small sample program to show the problem

<RibbonWindow x:Class="RibbonWorkaround.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
  <DockPanel x:Name="dockPanel">
    <Ribbon x:Name="mainRibbon" DockPanel.Dock="Top" IsMinimized="False" >
      <RibbonTab Header="Tab">
        <RibbonGroup Header="Test Group">

          <RibbonButton Click="test_Click" Label="Test Button" />

          <RibbonComboBox x:Name="testSelectionCombo" SelectionBoxWidth="80">
            <RibbonGallery x:Name="testSelection"  MaxColumnCount="1" >
              <RibbonGalleryCategory x:Name="testSelectionCat" >
                <RibbonGalleryItem IsSelected="True">Test 1</RibbonGalleryItem>
                <RibbonGalleryItem>Test 2</RibbonGalleryItem>
                <RibbonGalleryItem>Test 3</RibbonGalleryItem>
              </RibbonGalleryCategory>
            </RibbonGallery>
          </RibbonComboBox>

        </RibbonGroup>

      </RibbonTab>
    </Ribbon>

    <Grid>
      <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*"/>
        <ColumnDefinition Width="*"/>
      </Grid.ColumnDefinitions>
      <Button Click="Disable_Click" >Disable Ribbon</Button>
      <Button Grid.Column="1" Click="Enable_Click" >Enable Ribbon</Button>
    </Grid>
  </DockPanel>
</RibbonWindow>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Controls.Ribbon;

namespace RibbonWorkaround
{
  /// <summary>
  /// Interaction logic for MainWindow.xaml
  /// </summary>
  public partial class MainWindow:RibbonWindow
  {
    public MainWindow()
    {
      InitializeComponent();

    }

    private void Disable_Click(object sender,RoutedEventArgs e)
    {
      mainRibbon.IsEnabled=false;
    }

    private void Enable_Click(object sender,RoutedEventArgs e)
    {
      mainRibbon.IsEnabled=true;
    }

    private void test_Click(object sender,RoutedEventArgs e)
    {
      Console.Beep();
    }
  }
}

If you try this you'll find that the RibbonComboBox works find at first. If you select the large Disable button its disabled as you might expect. But after pressing Enable it will simply refuse to work....

Any ideas on this??


BTW: I've discovered several other problems with the RibbonComboBox control (including data binding that doesn't work properly or that the initially selected value of a data binding sometimes just doesn't show).