ASPxClientGantt.TaskEditDialogShowing Event

Occurs before the edit dialog is shown.

Declaration

TaskEditDialogShowing: ASPxClientEvent<ASPxClientGanttTaskEditDialogShowingEventHandler<ASPxClientGantt>>

Event Data

The TaskEditDialogShowing event's data class is ASPxClientGanttTaskEditDialogShowingEventArgs. 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.
hiddenFields	Specifies hidden fields in the edit dialog.
key	Specifies the task key.
readOnlyFields	Specifies read-only fields in the edit dialog.
values	Specifies the task values.

Remarks

Use the TaskEditDialogShowing event to customize the edit dialog before it is invoked.

Run Demo

View Example: How to implement a custom "Task Details" dialog

ASPX

<dx:ASPxGantt ID="Gantt" >
    <ClientSideEvents TaskEditDialogShowing="onGanttTaskEditDialogShowing" ... />
</dx:ASPxGantt>

JS

function onGanttTaskEditDialogShowing(s, e) {
    ...
    e.values["Subject"]= "Custom dialog text";
    e.readOnlyFields.push("Subject");
    e.hiddenFields.push("PercentComplete");
}

Result:

Note that the readOnlyFields and hiddenFields event parameters affect only task fields. Use the AllowTaskResourceUpdate property to hide the Resource Manager in the Task Details dialog.

Concepts

• Gantt Elements: Task

• Manage Tasks