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V24.2

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DxSankey.NodeClick Event

Fires when a user clicks a DxSankey node.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.2.dll

NuGet Package: DevExpress.Blazor

#Declaration

C#
[Parameter]
public EventCallback<SankeyNodeClickEventArgs> NodeClick { get; set; }

#Event Data

The NodeClick event's data class is SankeyNodeClickEventArgs. The following properties provide information specific to this event:

Property Description
Node Returns the clicked node.

#Remarks

Handle the NodeClick event to respond to clicks on nodes.

The following code snippet handles the NodeClick event and displays information about the clicked node and associated links:

<DxSankey Data="@Data"
          Width="100%"
          Height="440px"
          NodeClick="@OnNodeClick"
          SourceFieldName="Source"
          TargetFieldName="Target"
          WeightFieldName="Weight">
    <DxSankeyNodeSettings Width="8" Spacing="30" />
    <DxSankeyLinkSettings ColorMode="SankeyLinkColorMode.Gradient" />
    <DxTitleSettings Text="Commodity Turnover" />
</DxSankey>

@Message

@code {
    IEnumerable<SankeyDataPoint> Data = Enumerable.Empty<SankeyDataPoint>();
    protected override void OnInitialized() {
        Data = GenerateData();
    }

    string Message { get; set; }
    void OnNodeClick(SankeyNodeClickEventArgs args) {
        var node = args.Node;
        Message = "The clicked node: " + node.Label + ". " +
          "Incoming links: " + node.LinksIn.Length + ". " +
          "Outgoing links: " + node.LinksOut.Length + ".";
    }
}

See Also