DiagramControl.ConnectionChanging Event

Occurs when the connection is about to be changed by the end-user.

Namespace: DevExpress.XtraDiagram

Assembly: DevExpress.XtraDiagram.v24.1.dll

NuGet Package: DevExpress.Win.Diagram

Declaration

C#

[DiagramCategory(DiagramCategory.DiagramItems)]
public event EventHandler<DiagramConnectionChangingEventArgs> ConnectionChanging

VB.NET

<DiagramCategory(DiagramCategory.DiagramItems)>
Public Event ConnectionChanging As EventHandler(Of DiagramConnectionChangingEventArgs)

Event Data

The ConnectionChanging event's data class is DiagramConnectionChangingEventArgs. The following properties provide information specific to this event:

Property	Description
Cancel	Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs.
Connector	Returns the connector whose beginning/ending item is about to be changed.
ConnectorPointType	Returns the type of the connection point which is about to be moved.
NewIndex	Returns the index of the connection point on the diagram item to which the connector is about to be attached.
NewItem	Returns the diagram item the connector is about to be attached to.
NewPoint	Returns the new coordinates of the connection point which is about to be moved.
OldIndex	Returns the index of the connection point on the diagram item from which the connector is about to be detached.
OldItem	Returns the diagram item from which the connector is about to be detached.
OldPoint	Returns the initial coordinates of the connection point which is about to be moved.

Remarks

The ConnectorPointType event’s property returns whether the connection point that is about to be changed is the begin or end point. To get the previous diagram item and its connection point to which the connection point was glued, use the OldItem and OldIndex properties correspondingly. The new item and its connection point are returned by the NewItem and NewIndex properties