Skip to main content

DevExpress v24.2 Update — Your Feedback Matters

Our What's New in v24.2 webpage includes product-specific surveys. Your response to our survey questions will help us measure product satisfaction for features released in this major update and help us refine our plans for our next major release.

Take the survey Not interested

GanttView.AddingNewResourceLink Event

Occurs before the GanttControl creates a resource link. This event allows you to change this link.

Namespace: DevExpress.Xpf.Gantt

Assembly: DevExpress.Xpf.Gantt.v24.2.dll

NuGet Package: DevExpress.Wpf.Gantt

#Declaration

#Event Data

The AddingNewResourceLink event's data class is AddingNewResourceLinkEventArgs. The following properties provide information specific to this event:

Property Description
AllocationPercentage Gets a percentage of time the resource spends on a task.
Handled Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs.
NewResourceLink Gets or sets a newly created resource link.
OriginalSource Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs.
Resource Gets a resource for which a new link is being added.
RoutedEvent Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs.
Source Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.
Task Gets a task for which a new link is being added.

The event data class exposes the following methods:

Method Description
InvokeEventHandler(Delegate, Object) When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs.
OnSetSource(Object) When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs.

#Remarks

<dxgn:GanttControl ItemsSource="{Binding Tasks}">
    <dxgn:GanttColumn BindTo="Name" Width="Auto"/>
    <dxgn:GanttColumn BindTo="ResourceLinks" AllowEditing="True"/>
    <dxgn:GanttControl.View>
        <dxgn:GanttView ResourcesSource="{Binding Resources}"
                        ResourceLinksPath="ResourceIds"
                        AddingNewResourceLink="GanttView_AddingNewResourceLink"
                        ... >
        </dxgn:GanttView>
    </dxgn:GanttControl.View>
</dxgn:GanttControl>         
void GanttView_AddingNewResourceLink(object sender, AddingNewResourceLinkEventArgs e) {
    e.NewResourceLink = ((GanttResourceItem)e.Resource).Id;
} 

Run Demo: Assign Resources to Tasks without Links

See Also