layout: default title: FieldsIndex parent: Core Classes —
dymaptic.GeoBlazor.Core
dymaptic.GeoBlazor.Core.Components.Layers
FieldsIndex Class
This class provides convenient methods that can be used to make case-insensitive lookups for a field by its name. It also provides more information such as the list of date fields in a layer.
ArcGIS Maps SDK for JavaScript
public class FieldsIndex : dymaptic.GeoBlazor.Core.Components.MapComponent
Inheritance System.Object 🡒 Microsoft.AspNetCore.Components.ComponentBase 🡒 MapComponent 🡒 FieldsIndex
Properties
FieldsIndex.DateFields Property
An array of date fields or field json objects.
public dymaptic.GeoBlazor.Core.Components.Layers.Field[]? DateFields { get; set; }
Property Value
FieldsIndex.JsFieldsReference Property
For internal use only, JavaScript object reference.
public Microsoft.JSInterop.IJSObjectReference JsFieldsReference { get; set; }
Property Value
Microsoft.JSInterop.IJSObjectReference
Methods
FieldsIndex.Get(string) Method
Returns a field with the specified field name.
public System.Threading.Tasks.Task<dymaptic.GeoBlazor.Core.Components.Layers.Field> Get(string fieldName);
Parameters
fieldName System.String
The name of the field. The name is case-insensitive.
Returns
System.Threading.Tasks.Task<Field>
FieldsIndex.GetTimeZone(string) Method
Returns a time zone for a field. Use this method to ensure queries in the following places are issued in the time zone of the given date field:
FeatureLayer.DefinitionExpression
Query.Where
FeatureFilter.Where
public System.Threading.Tasks.Task<string?> GetTimeZone(string fieldName);
Parameters
fieldName System.String
The name of the field.
Returns
System.Threading.Tasks.Task<System.String>
For Date Fields: Returns the time zone associated with the date field. Returns null if the layer’s date fields are in unknown time zone.
For DateOnly, TimeOnly, or TimeStampOffset Fields: Returns null.
All other fields return null.
FieldsIndex.Has(string) Method
Checks if a field with the specified field name exists in the layer.
public System.Threading.Tasks.Task<bool> Has(string fieldName);
Parameters
fieldName System.String
The name of the field. The name is case-insensitive.
Returns
System.Threading.Tasks.Task<System.Boolean>
FieldsIndex.IsDateField(string) Method
Checks if a field with the specified field name is a date field.
public System.Threading.Tasks.Task<bool> IsDateField(string fieldName);
Parameters
fieldName System.String
The name of the field.