aspnet-js-aspxclientgantt-fc567364.md
Occurs before a user updates a task.
TaskUpdating: ASPxClientEvent<ASPxClientGanttTaskUpdatingEventHandler<ASPxClientGantt>>
The TaskUpdating event's data class is ASPxClientGanttTaskUpdatingEventArgs. 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 task key. |
| newValues | Specifies the task’s new values. |
| values | Specifies the task values. |
Use the TaskUpdating event to process task data before a task is updated.
Run Demo: ASPxGantt - Client-Side Events Run Demo: MVCxGantt - Client-Side Events
Web Forms:
<dx:ASPxGantt ID="Gantt" >
<ClientSideEvents TaskUpdating="function(s, e) {
if (e.newValues["Subject"].includes("test")) {
//...
e.cancel = true;
}
}" />
</dx:ASPxGantt>
MVC:
@Html.DevExpress().Gantt(settings => {
settings.Name = "gantt";
settings.ClientSideEvents.TaskUpdating = "function (s, e) {
if (e.newValues["Subject"].includes("test")) {
//...
e.cancel = true;
}
}";
...
}).Bind(
GanttDataProvider.Tasks, GanttDataProvider.Dependencies,
GanttDataProvider.Resources, GanttDataProvider.ResourceAssignments
).GetHtml()
See Also