TipPointerForNodeTooltip.razor

@page "/TipPointerForNodeTooltip"

@using Syncfusion.Blazor.Diagram
@using Syncfusion.Blazor.Popups
@using Syncfusion.Blazor.Buttons

<SfButton Content="Node TipPointer" OnClick="@TipPointerChange" />
<SfDiagramComponent Width="1000px" Height="500px" Nodes="@_nodes" />

@code
{
    //Define diagram's nodes collection
    private DiagramObjectCollection<Node> _nodes;

    protected override void OnInitialized()
    {
        //Intialize diagram's nodes collection
        _nodes = new DiagramObjectCollection<Node>();
        Node node = new Node()
        {
            ID = "node1",
            OffsetX = 250,
            OffsetY = 250,
            Width = 100,
            Height = 100,
            Style = new ShapeStyle()
            {
                Fill = "#6495ED",
                StrokeColor = "white"
            },
            //Set tooltip
            Tooltip = new DiagramTooltip() { Content = "NodeTooltip", ShowTipPointer = true },
            Constraints = NodeConstraints.Default | NodeConstraints.Tooltip,
        };
        _nodes.Add(node);
    }

    //Change TipPointer at run time.
    private void TipPointerChange()
    {
        _nodes[0].Tooltip.ShowTipPointer = false;
    }
}