wpf-devexpress-dot-xpf-dot-scheduling-dot-schedulercontrolbase.md
Occurs when any SchedulerControl’s dependency property is changed.
Namespace : DevExpress.Xpf.Scheduling
Assembly : DevExpress.Xpf.Scheduling.v25.2.dll
NuGet Package : DevExpress.Wpf.Scheduling
public event DependencyPropertyChangedEventHandler DependencyPropertyChanged
Public Event DependencyPropertyChanged As DependencyPropertyChangedEventHandler
The DependencyPropertyChanged event's data class is DependencyPropertyChangedEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| NewValue | Gets the value of the property after the change. |
| OldValue | Gets the value of the property before the change. |
| Property | Gets the identifier for the dependency property where the value change occurred. |
The event data class exposes the following methods:
| Method | Description |
|---|---|
| Equals(Object) | Determines whether the provided object is equivalent to the current DependencyPropertyChangedEventArgs. |
| Equals(DependencyPropertyChangedEventArgs) | Determines whether the provided DependencyPropertyChangedEventArgs is equivalent to the current DependencyPropertyChangedEventArgs. |
| GetHashCode() | Gets a hash code for this DependencyPropertyChangedEventArgs. |
| ToString() | Returns the fully qualified type name of this instance. Inherited from ValueType. |
Handle this event to determine whether a certain dependency property is changed.
This event can be used instead of the legacy SchedulerControl.SelectionChanged event, as illustrated in the following code snippet:
private void schedulerControl_DependencyPropertyChanged(object sender, DependencyPropertyChangedEventArgs e) {
SchedulerControl scheduler = sender as SchedulerControl;
if (e.Property == SchedulerControl.SelectedIntervalProperty) {
OutputBox.AppendText(string.Format("SelectedInterval is changed. New value is {0} \r\n", e.NewValue));
OutputBox.ScrollToEnd();
}
if (e.Property == SchedulerControl.SelectedResourceProperty) {
OutputBox.AppendText(string.Format("SelectedResource is changed. New value is {0} \r\n", ((ResourceItem)e.NewValue).Caption));
OutputBox.ScrollToEnd();
}
}
Private Sub schedulerControl_DependencyPropertyChanged(ByVal sender As Object, ByVal e As DependencyPropertyChangedEventArgs)
Dim scheduler As SchedulerControl = TryCast(sender, SchedulerControl)
If e.Property = SchedulerControl.SelectedIntervalProperty Then
OutputBox.AppendText(String.Format("SelectedInterval is changed. New value is {0} " & ControlChars.CrLf, e.NewValue))
OutputBox.ScrollToEnd()
End If
If e.Property = SchedulerControl.SelectedResourceProperty Then
OutputBox.AppendText(String.Format("SelectedResource is changed. New value is {0} " & ControlChars.CrLf, CType(e.NewValue, ResourceItem).Caption))
OutputBox.ScrollToEnd()
End If
End Sub
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the DependencyPropertyChanged event.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.
ActiveViewIndex="0"
DependencyPropertyChanged="schedulerControl_DependencyPropertyChanged"
FirstDayOfWeek="Monday"
#line 37 "..\..\..\MainWindow.xaml"
this.schedulerControl.DependencyPropertyChanged += new System.Windows.DependencyPropertyChangedEventHandler(this.schedulerControl_DependencyPropertyChanged);
#ExternalSource("..\..\MainWindow.xaml",37)
AddHandler Me.schedulerControl.DependencyPropertyChanged, New System.Windows.DependencyPropertyChangedEventHandler(AddressOf Me.schedulerControl_DependencyPropertyChanged)
See Also