radzen-blazor/Radzen.Blazor/RadzenHighLowSeries.razor

@using Radzen.Blazor
@using Radzen.Blazor.Rendering
@typeparam TItem
@inherits Radzen.Blazor.CartesianSeries<TItem>

<CascadingValue Value="@this">
  @ChildContent
</CascadingValue>
@code {
    public override RenderFragment Render(ScaleBase categoryScale, ScaleBase valueScale)
    {
        var chart = RequireChart();
        var category = ComposeCategory(categoryScale);
        var style = $"clip-path: url(#{chart.ClipPath}); -webkit-clip-path: url(#{chart.ClipPath});";
        var index = chart.Series.IndexOf(this);
        var className = $"rz-highlow-series rz-series-{index}";

        var high = High;
        var low = Low;

        return
        @<g class="@className">
            @foreach (var data in Items)
            {
                var cx = category(data);

                var highValue = high(data);
                var lowValue = low(data);

                var highY = valueScale.Scale(highValue, true);
                var lowY = valueScale.Scale(lowValue, true);

                var path = $"M {cx.ToInvariantString()} {highY.ToInvariantString()} L {cx.ToInvariantString()} {lowY.ToInvariantString()}";

                <Path @key="@($"hl-{Items.IndexOf(data)}")" D="@path" Stroke="@Stroke" StrokeWidth="@StrokeWidth" LineType="@LineType" Fill="none" Style="@style" />
            }
        </g>;
    }
}