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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

Gantt - Subtasks

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()

Concepts

See Also