WPF Tips & Tricks (May – June 2021)

If you have any questions regarding this month’s WPF Tips & Tricks blog post, please comment below or submit a support ticket via the DevExpress Support Center. We’ll be happy to follow up.

WPF-Related Tips

• The default KeyToCommand behavior uses the KeyUp event to handle KeyGestures. You can set the EventName property to specify a different event.

• To display controls in the ThemedWindow header, use the ThemedWindow.HeaderItems and ThemedWindow.ToolbarItems properties.

• To hide the space reserved for the WPF menu item glyphs, you can set the attached BarManager.ShowGlyphsInPopupMenus property to False:

  <dxb:MainMenuControl dxb:BarManager.ShowGlyphsInPopupMenus="False">

• Our WPF Data Grid can detect nested property changes if you enable the GridControl.DetectNestedPropertyChanges property.
• You can use EnumItemsSourceBehavior to bind an enumeration to the ItemsSource property of a control.
• ReadOnlyDependencyPropertyBindingBehavior allows you to bind read-only properties.
• You can prevent a dialog from closing when a dialog button is clicked. Set the CancelEventArgs.Cancel property in the button UICommand’s Command. You can find a code sample in the following section: DialogService > Define Dialog Buttons.

Interesting WPF-Related Support Tickets

WPF Data Grid

• Define ToolTip for TreeListView node images (T994154)
• Allow editing of the HyperlinkEdit column in GridControl (T1009670)
• Prevent the creation of certain columns when AutoGenerateColumns is enabled (T998481)
• TreeViewControl - How to manually set focus on the Filter Node (T999090)

WPF Editors

• Show Tree View in the combo box dropdown (T992076)

  Use the LookUpEdit.PopupContentTemplate property to specify the dropdown content.

• Make the background and borders transparent in DateEdit (T1003285)
• Change TrackBarEdit's track style (T1003774)

  You can use the ThumbStyle, NearTrackStyle, and FarTrackStyle properties to customize the track bar.

Charts & Map control

• Crosshair Cursor - How to hide items with zero values (T1007946)
• How to hide the SidePoint label using a binding expression (T1011714)
• How to change the custom element template font size depending on the map zoom level (T992742)
• How to generate MapCustomElements with ListSourceDataAdapter (T991982)

Miscellaneous

• How to display the Properties Panel when DiagramControl is used instead of DiagramDesignerControl (T1011018)
• Reorder default BarButtonItems from the tabbed DocumentPanel Context Menu (T997150)
• Define TileNavPane’s dropdown Height (T996936)

  To specify dropdown height, declare the TileNavPaneBar implicit style:

  <Style TargetType="dxnavi:TileNavPaneBar" 
         xmlns:dxnavi=http://schemas.devexpress.com/winfx/2008/xaml/navigation/internal>
      <Setter Property="Height" Value="70" />
  </Style>

• ThemedMessageBox – Highlight the Default and Cancel buttons (T998835)
• Assign Tooltips for Property Grid Control category buttons (T1006676)
• RadialContextMenu - How to return to the collapsed view after a BarButtonItem is clicked (T1006593)
• Scheduler - How to change the appointment subject’s alignment (T1008842)

WPF Documentation and Examples

• We recently revamped our WPF Data Grid’s Data Editing help section - Data Editing and Validation.
• The following performance-related topics have been updated: Frequent Data Updates and Managing Multi-Thread Data Updates.
• We created a new example that demonstrates how to specify ApplicationActivator for the NotificationService: How to use NotificationService to create interactive notifications.

Before we let you go…

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