ASPxClientGantt.TaskUpdating Event

Occurs before a user updates a task.

Declaration

TaskUpdating: ASPxClientEvent<ASPxClientGanttTaskUpdatingEventHandler<ASPxClientGantt>>

Event Data

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.

Remarks

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:

ASPX

<dx:ASPxGantt ID="Gantt" >
    <ClientSideEvents TaskUpdating="function(s, e) {
        if (e.newValues["Subject"].includes("test")) {
            //...
            e.cancel = true;
        }
    }" />
</dx:ASPxGantt>

MVC:

Razor C#

@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()

Concepts

• [Web Forms] Manage Tasks

• [Web Forms] Gantt Elements: Task

• [MVC] Gantt Elements: Task