ASPxClientGantt.DependencyDeleting Event

Occurs before a user deletes a dependency.

Declaration

DependencyDeleting: ASPxClientEvent<ASPxClientGanttDependencyDeletingEventHandler<ASPxClientGantt>>

Event Data

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

Property	Description
cancel	Specifies whether to cancel the related action (for example, row edit, export). Inherited from ASPxClientCancelEventArgs.
key	Specifies the dependency key.
values	Specifies the dependency values.

Remarks

Use the DependencyDeleting event to process dependency data before the dependency is deleted.

Run Demo: ASPxGantt - Client-Side Events Run Demo: MVCxGantt - Client-Side Events

Example

The following example illustrates how to cancel dependency deletion if the dependency’s predecessor task key is 10:

Web Forms:

ASPX

<dx:ASPxGantt ID="Gantt" >
    <ClientSideEvents DependencyDeleting="function(s, e) {
        if (e.values["ParentID"] == 10) {
            //...
            e.cancel = true;
        }
    }" />
</dx:ASPxGantt>

MVC:

Razor C#

@Html.DevExpress().Gantt(settings => {
    settings.Name = "gantt";
    settings.ClientSideEvents.DependencyDeleting = "function (s, e) { 
        if (e.values["ParentID"] == 10) {
            //...
            e.cancel = true;
        }
    }";
    ...
}).Bind(
    GanttDataProvider.Tasks, GanttDataProvider.Dependencies, 
    GanttDataProvider.Resources, GanttDataProvider.ResourceAssignments
).GetHtml()

Concepts

• [Web Forms] Manage Dependencies

• [Web Forms] Gantt Elements: Dependency

• [MVC] Gantt Elements: Dependency