Call the ShapeCollection.AddConnector method to create an unbound shape connector.
Shape shapeConnector = worksheet.Shapes.AddConnector(ConnectorType.Curved, 10, 10, 500, 100);
The table below lists an API used to change the connector's appearance.
Change the connector's type
Change the connector's color and thickness
Specify arrowhead options for the connector's start
Specify arrowhead options for the connector's end
The code sample below shows how to use these members to make the connector look as it does on the following image.
// Change the connector's color and thickness. shapeConnector.Outline.SetSolidFill(Color.Black); shapeConnector.Outline.Width = 2.5; // Specify arrowhead options for the connector's ends. ConnectorFormat connectorFormat = shapeConnector.ConnectorFormat; connectorFormat.Arrows.StartArrowheadType = ArrowheadType.Stealth; connectorFormat.Arrows.StartArrowheadWidth = ArrowheadSize.Large; connectorFormat.Arrows.StartArrowheadLength = ArrowheadSize.Small; connectorFormat.Arrows.EndArrowheadType = ArrowheadType.Stealth; connectorFormat.Arrows.EndArrowheadWidth = ArrowheadSize.Large; connectorFormat.Arrows.EndArrowheadLength = ArrowheadSize.Small;
The following methods allow you to link shapes to a connector.
Check the ShapeGeometry.ConnectionSiteCount property to retrieve the shape's connection sites' number. The sites' index order is different for each shape. Generally, the index begins with the top side (0) and grows counterclockwise, as shown below.
As for the 3-D shapes, the connection sites' index changes as follows.
The code sample shows how to attach shapes to the connector. The connector is bound to the third site of each shape.