SQL Query

This GeoBlazor sample, written in Blazor for .NET developers, demonstrates running an ad-hoc SQL Query against a FeatureLayer from the ArcGIS Maps SDK for JavaScript exposed through GeoBlazor's MapView.QueryFeatures method, plus the FeatureLayer, SimpleFillSymbol, and PopupTemplate Razor components. The page shows a 2D navigation basemap centered on the Santa Monica Mountains in Los Angeles County. In the upper-right corner of the map a CustomOverlay hosts a dropdown of preset SQL where-clauses targeting the LA County parcels feature service, such as UseType = 'Residential', UseType = 'Government', UseType = 'Irrigated Farm', several TaxRateArea filters, and Roll_LandValue thresholds. Selecting a clause invokes QueryFeatures with that where expression, the current view extent, and a fixed set of OutFields, then renders the matching parcels as graphics styled with a semi-transparent blue SimpleFillSymbol and binds a PopupTemplate showing the parcel's APN, UseType, tax rate city, and land value. The sample is intended to demonstrate executing parameterized SQL queries against a hosted FeatureLayer and drawing the results in a Blazor application without writing JavaScript.