GanttControlOptionsCustomization.AllowModifyDependencies Property

Gets or sets whether users can modify dependencies between tasks in the chart: change a predecessor or successor of a task, create new dependencies.

Namespace: DevExpress.XtraGantt.Options

Assembly: DevExpress.XtraGantt.v25.2.dll

NuGet Package: DevExpress.Win.Gantt

Declaration

C#

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

VB.NET

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

Property Value

Type	Default	Description
DefaultBoolean	Default	True, if users can modify dependencies; 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 AllowModifyDependencies
GanttControl	.OptionsCustomization .AllowModifyDependencies

Remarks

If the AllowModifyDependencies option is enabled, users can change a task’s predecessor or successor. Users can remove a dependency or attach it to another task if the mouse pointer hovers over the dependency arrow. To create a new dependency, use pointers displayed at task edges.

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:

• TaskDependencyModification — repeatedly fires when the user modifies a task’s dependency.
• TaskDependencyModificationCanceled — fires when the user presses Esc to cancel the operation.
• TaskDependencyModificationCompleted — fires when a user finishes modifying a dependency. Allows you to cancel the operation.
• TaskDependencyModified — fires when a task’s dependency is successfully modified.

See Interactive Editing for more information.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the AllowModifyDependencies property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

xaf-win-gantt-control/CS/XPO/GanttSolutionXPO/GanttSolutionXPO.Win/Editors/CustomGanttEditor.cs#L87

control.OptionsCustomization.AllowModifyTasks = DevExpress.Utils.DefaultBoolean.True;
control.OptionsCustomization.AllowModifyDependencies = DevExpress.Utils.DefaultBoolean.True;
control.OptionsCustomization.AllowModifyProgress = DevExpress.Utils.DefaultBoolean.True;