BPMN Data Object in Blazor Diagram Component

7 Jul 20223 minutes to read

A data object represents information flowing through the process, such as data placed into the process, data resulting from the process, data that needs to be collected, or data that must be stored. To define a DataObject, set the shape to DataObject and the type property defines whether data is an input or output. You can create multiple instances of data object with the collection property of data.

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

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

    //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",
            //Sets type to Bpmn and shape to DataObject
            Shape = new DiagramShape()
                Type = Shapes.Bpmn,
                BpmnShape = BpmnShapes.DataObject,
                //Sets collection to true when Dataobject is not a Single instance
                DataObject = new DiagramBpmnDataObject()
                    Collection = true,
                    Type = BpmnDataObjects.Input

The following table contains various representation of the BPMN data object.

Boundary Image
Collection Data Object Collection Data BPMN Shape
Data Input Data Input BPMN Shape
Data Output Data Output BPMN Shape