BPMN Gateway in Blazor Diagram Component

15 Dec 20223 minutes to read

Gateway is used to control the flow of a process and it is represented as a diamond shape. To create a gateway, the shape property of the node should be set to “Gateway” and the Gateway property can be set with any of the appropriate gateways. The following code example explains how to create a BPMN Gateway.

@using Syncfusion.Blazor.Diagrams
@using System.Collections.ObjectModel

@* Initialize Diagram *@
<SfDiagram Height="600px" Nodes="@NodeCollection">
</SfDiagram>

@code{
    //Defines diagram's node collection
    public ObservableCollection<DiagramNode> NodeCollection { get; set; }

    protected override void OnInitialized()
    {
        NodeCollection = new ObservableCollection<DiagramNode>();
        DiagramNode node = new DiagramNode()
        {
            //Position of the node
            OffsetX = 100,
            OffsetY = 100,
            //Size of the node
            Width = 100,
            Height = 100,
            //Unique Id of the node
            Id = "node1",
            Shape = new DiagramShape()
            {
                //Sets type to Bpmn and shape to Gateway
                Type = Shapes.Bpmn,
                BpmnShape = BpmnShapes.Gateway,
                //Sets type of the gateway to None
                Gateway = new DiagramBpmnGateway()
                {
                    Type = BpmnGateways.None
                }
            }
        };
        NodeCollection.Add(node);
    }
}

NOTE

By default, the Gateway will be set to None.

There are several types of gateways as follows:

Shape	Image
None
Exclusive
Parallel
Inclusive
Complex
EventBased
ExclusiveEventBased
ParallelEventBased