dymaptic.GeoBlazor.Core
dymaptic.GeoBlazor.Core.Components.Renderers
UniqueValueRenderer Class
UniqueValueRenderer allows you to symbolize features in a Layer based on one or more matching string attributes.
This is typically done by using unique colors, fill styles, or images to represent features with equal values in a
string field.
ArcGIS
JS API
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public class UniqueValueRenderer : dymaptic.GeoBlazor.Core.Components.Renderers.Renderer
Inheritance System.Object 🡒 Microsoft.AspNetCore.Components.ComponentBase 🡒 MapComponent 🡒 LayerObject 🡒 Renderer 🡒 UniqueValueRenderer
Properties
UniqueValueRenderer.DefaultLabel Property
Label used in the Legend to describe features assigned the default symbol.
public string? DefaultLabel { get; set; }
Property Value
UniqueValueRenderer.DefaultSymbol Property
The default symbol used to draw a feature whose value is not matched or specified by the renderer.
public dymaptic.GeoBlazor.Core.Components.Symbols.Symbol? DefaultSymbol { get; }
Property Value
UniqueValueRenderer.Field Property
The name of the attribute field the renderer uses to match unique values or types.
public string? Field { get; set; }
Property Value
UniqueValueRenderer.LegendOptions Property
An object providing options for displaying the renderer in the Legend.
public dymaptic.GeoBlazor.Core.Components.Renderers.UniqueValueRendererLegendOptions? LegendOptions { get; set; }
Property Value
UniqueValueRendererLegendOptions
UniqueValueRenderer.RendererType Property
The subclass Renderer type
public override dymaptic.GeoBlazor.Core.Components.Renderers.RendererType RendererType { get; }
Property Value
UniqueValueRenderer.UniqueValueInfos Property
Each element in the array is an object that provides information about a unique value associated with the renderer.
public System.Collections.Generic.HashSet<dymaptic.GeoBlazor.Core.Components.Renderers.UniqueValueInfo> UniqueValueInfos { get; set; }
Property Value
System.Collections.Generic.HashSet<UniqueValueInfo>
Methods
UniqueValueRenderer.RegisterChildComponent(MapComponent) Method
Called from dymaptic.GeoBlazor.Core.Components.MapComponent.OnAfterRenderAsync(System.Boolean) to “Register” the current component with it’s parent.
public override System.Threading.Tasks.Task RegisterChildComponent(dymaptic.GeoBlazor.Core.Components.MapComponent child);
Parameters
child MapComponent
The calling, child component to register
Returns
Exceptions
InvalidChildElementException
Throws if the current child is not a valid sub-component to the parent.
UniqueValueRenderer.UnregisterChildComponent(MapComponent) Method
Undoes the “Registration” of a child with its parent.
public override System.Threading.Tasks.Task UnregisterChildComponent(dymaptic.GeoBlazor.Core.Components.MapComponent child);
Parameters
child MapComponent
The child to unregister