Managing Items Interaction

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The Diagram control provides a set of properties that allow you to restrict end-users from performing certain operations with diagram items.

You can modify the properties of existing diagram items by accessing them using the DiagramControl.Items collection. Alternatively, use the DiagramControl.ItemCreating event to modify the properties of an item that is about to be created.

Shapes and Images

Operation

Item's Property

Diagram's Property

Attaching connectors

DiagramItem.CanAttachConnectorBeginPoint

DiagramItem.CanAttachConnectorEndPoint

Copying

DiagramItem.CanCopy

DiagramOptionsProtection.AllowCopyItems

Deleting

DiagramItem.CanDelete

DiagramOptionsProtection.AllowAddRemoveItems

Editing the text

DiagramItem.CanEdit

DiagramOptionsProtection.AllowEditItems

Hiding subordinate items

DiagramItem.CanHideSubordinates

Moving

DiagramItem.CanMove

DiagramOptionsProtection.AllowMoveItems

Moving with subordinate items

DiagramItem.MoveWithSubordinates

DiagramOptionsProtection.AllowMoveItems

Placing in/out of a container

DiagramItem.CanChangeParent

DiagramOptionsProtection.AllowMoveItems

Resizing

DiagramItem.CanResize

DiagramOptionsProtection.AllowResizeItems

Rotating

DiagramItem.CanRotate

DiagramOptionsProtection.AllowRotateItems

Selecting

DiagramItem.CanSelect

Snapping

DiagramItem.CanSnapToOtherItems

DiagramItem.CanSnapToThisItem

Transforming

DiagramShape.CanChangeParameter

DiagramOptionsProtection.AllowChangeShapesParameter

Connectors

Operation

Item's Property

Diagram's Property

Copying

DiagramItem.CanCopy

DiagramOptionsProtection.AllowCopyItems

Deleting

DiagramItem.CanDelete

DiagramOptionsProtection.AllowAddRemoveItems

Dragging the begin and end points

DiagramConnector.CanDragBeginPoint

DiagramConnector.CanDragEndPoint

DiagramOptionsProtection.AllowResizeItems

DiagramOptionsProtection.AllowAttachDetachConnectors

Dragging intermediate points

DiagramConnector.CanChangeRoute

DiagramOptionsProtection.AllowChangeConnectorsRoute

Editing the text

DiagramItem.CanEdit

DiagramOptionsProtection.AllowEditItems

Moving

DiagramItem.CanMove

DiagramOptionsProtection.AllowMoveItems

Placing in/out of a container

DiagramItem.CanChangeParent

DiagramOptionsProtection.AllowMoveItems

Selecting

DiagramItem.CanSelect

Containers

Operation

Item's Property

Diagram's Property

Adding items to the container

DiagramContainer.CanAddItems

Attaching connectors

DiagramItem.CanAttachConnectorBeginPoint

DiagramItem.CanAttachConnectorEndPoint

Copying

DiagramItem.CanCopy

DiagramOptionsProtection.AllowCopyItems

Deleting

DiagramItem.CanDelete

DiagramOptionsProtection.AllowAddRemoveItems

Editing the header text

DiagramItem.CanEdit

DiagramOptionsProtection.AllowEditItems

Hiding subordinate items

DiagramItem.CanHideSubordinates

Moving

DiagramItem.CanMove

DiagramOptionsProtection.AllowMoveItems

Moving with subordinate items

DiagramItem.MoveWithSubordinates

DiagramOptionsProtection.AllowMoveItems

Placing in/out of another container

DiagramItem.CanChangeParent

DiagramOptionsProtection.AllowMoveItems

Resizing

DiagramItem.CanResize

DiagramOptionsProtection.AllowResizeItems

Rotating

DiagramItem.CanRotate

DiagramOptionsProtection.AllowRotateItems

Selecting

DiagramItem.CanSelect

Snapping

DiagramItem.CanSnapToOtherItems

Use the following properties to restrict operations with child items of a DiagramContainer. These properties have a lower priority than corresponding properties of the child items.

See Also