dymaptic.GeoBlazor.Core
dymaptic.GeoBlazor.Core.Components.Layers
Label Class
Defines label expressions, symbols, scale ranges, label priorities, and label placement options for labels on a
layer. See the Labeling guide for more information about labeling.
ArcGIS
JS API
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public class Label : dymaptic.GeoBlazor.Core.Components.Layers.LayerObject,
System.IEquatable<dymaptic.GeoBlazor.Core.Components.Layers.Label>
Inheritance System.Object 🡒 Microsoft.AspNetCore.Components.ComponentBase 🡒 MapComponent 🡒 LayerObject 🡒 Label
Implements System.IEquatable<Label>
Properties
Label.LabelExpression Property
Defines the labels for a MapImageLayer.
public string? LabelExpression { get; set; }
Property Value
Remarks
MapImageLayer not yet implemented in GeoBlazor
Label.LabelExpressionInfo Property
Defines the labels for a FeatureLayer.
public dymaptic.GeoBlazor.Core.Components.Layers.LabelExpressionInfo? LabelExpressionInfo { get; set; }
Property Value
Label.LabelPlacement Property
The position of the label.
public string? LabelPlacement { get; set; }
Property Value
Methods
Label.Equals(object) Method
Determines whether the specified object is equal to the current object.
public override bool Equals(object? obj);
Parameters
obj System.Object
The object to compare with the current object.
Returns
System.Boolean
true if the specified object is equal to the current object; otherwise, false.
Label.GetHashCode() Method
Serves as the default hash function.
public override int GetHashCode();
Returns
System.Int32
A hash code for the current object.
Label.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.
Label.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
Returns
Label.ValidateRequiredChildren() Method
When a MapView is prepared to render, this will check to make sure that all properties with the
RequiredPropertyAttribute are provided.
public override void ValidateRequiredChildren();
Exceptions
MissingRequiredChildElementException
The consumer needs to provide the missing child component
MissingRequiredOptionsChildElementException
The consumer needs to provide ONE of the options of child components
Operators
Label.operator ==(Label, Label) Operator
Compares two Labels for equality.
public static bool operator ==(dymaptic.GeoBlazor.Core.Components.Layers.Label? left, dymaptic.GeoBlazor.Core.Components.Layers.Label? right);
Parameters
left Label
right Label
Returns
Label.operator !=(Label, Label) Operator
Compares two Labels for inequality.
public static bool operator !=(dymaptic.GeoBlazor.Core.Components.Layers.Label? left, dymaptic.GeoBlazor.Core.Components.Layers.Label? right);
Parameters
left Label
right Label