GanttControlOptionsCustomization.AllowModifyTasks Property

Gets or sets whether users can modify a task’s start and finish dates in the chart: resize its bounds or move it to a new time slot.

Namespace: DevExpress.XtraGantt.Options

Assembly: DevExpress.XtraGantt.v25.1.dll

NuGet Package: DevExpress.Win.Gantt

Declaration

C#

[DefaultValue(DefaultBoolean.Default)]
[XtraSerializableProperty]
public DefaultBoolean AllowModifyTasks { get; set; }

VB.NET

<XtraSerializableProperty>
<DefaultValue(DefaultBoolean.Default)>
Public Property AllowModifyTasks As DefaultBoolean

Property Value

Type	Default	Description
DefaultBoolean	Default	True, if users can modify a task’s start and finish dates; otherwise, Default or False.

Available values:

Name	Description	Return Value
True	The value is true.	0
False	The value is false.	1
Default	The value is specified by a global option or a higher-level object.	2

Property Paths

You can access this nested property as listed below:

Object Type	Path to AllowModifyTasks
GanttControl	.OptionsCustomization .AllowModifyTasks

Remarks

If the AllowModifyTasks option is enabled, users can reschedule a task. Users can use the mouse pointer to resize its duration or drag it to a new time slot.

To resize a task, move the mouse pointer over a task’s edge.

Note

The Editable option must be enabled and the ReadOnly option must be disabled to allow users to modify tasks.

You can handle the following events to customize an operation:

• TaskMoveStarted — fires when a user starts to move a task.
• TaskMoving — repeatedly fires when a user moves a task.
• TaskMoveCanceled — fires when a user presses Esc to cancel the operation.
• TaskMoveCompleted — fires when a user finishes moving a task. Allows you to cancel the operation.

• TaskMoved — fires when a task is successfully moved.

• TaskFinishDateModificationStarted — fires when a user starts to modify a task’s finish date.

• TaskFinishDateModification — repeatedly fires when a user modifies a task’s finish date.
• TaskFinishDateModificationCanceled — fires when a user presses Esc to cancel the operation.
• TaskFinishDateModificationCompleted — fires when a user finishes to modify a finish date. Allows you to cancel the operation.
• TaskFinishDateModified — fires when a task’s finish date is successfully modified.

See Interactive Editing for more information.