This GeoBlazor Pro sample, written in Blazor for .NET developers, demonstrates the FeatureReductionBinning feature-reduction technique from the ArcGIS Maps SDK for JavaScript exposed through GeoBlazor's FeatureReductionBinning Razor component. The page shows a 2D topographic map centered on New York City displaying 2020 motor-vehicle crash points aggregated into geohash bins; each bin is colored on a graduated ramp from light blue to dark red based on the number of crashes inside it and labeled with the crash count. A HomeWidget sits in the upper-left corner along with an ExpandWidget that, when opened, reveals a Toggle Binning button and a LegendWidget. Clicking Toggle Binning swaps the layer between the binned aggregate view and the raw crash points by calling FeatureLayer.SetFeatureReduction. The sample is intended to demonstrate how dense point data can be summarized into fixed bins for high-level pattern visualization.