DigitalTwinsClient.GetDigitalTwinAsync<T> Method

Reference

Definition

Namespace:: Azure.DigitalTwins.Core

Assembly:: Azure.DigitalTwins.Core.dll

Package:: Azure.DigitalTwins.Core v1.4.0

Source:: DigitalTwinsClient.cs

Important

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Gets a digital twin asynchronously.

public virtual System.Threading.Tasks.Task<Azure.Response<T>> GetDigitalTwinAsync<T> (string digitalTwinId, System.Threading.CancellationToken cancellationToken = default);

abstract member GetDigitalTwinAsync : string * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Azure.Response<'T>>
override this.GetDigitalTwinAsync : string * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Azure.Response<'T>>

Public Overridable Function GetDigitalTwinAsync(Of T) (digitalTwinId As String, Optional cancellationToken As CancellationToken = Nothing) As Task(Of Response(Of T))

Type Parameters

T

The type to deserialize the digital twin to.

Parameters

digitalTwinId: String

The Id of the digital twin.

cancellationToken: CancellationToken

The cancellation token.

Returns

Task<Response<T>>

The deserialized application/json digital twin and the HTTP response Response<T>.

Exceptions

RequestFailedException

The exception that captures the errors from the service. Check the ErrorCode and Status properties for more details.

ArgumentNullException

The exception is thrown when digitalTwinId is null.

Examples

This sample demonstrates getting and deserializing a digital twin into a custom data type.

Response<CustomDigitalTwin> getCustomDtResponse = await client.GetDigitalTwinAsync<CustomDigitalTwin>(customDtId);
CustomDigitalTwin customDt = getCustomDtResponse.Value;
Console.WriteLine($"Retrieved and deserialized digital twin {customDt.Id}:\n\t" +
    $"ETag: {customDt.ETag}\n\t" +
    $"ModelId: {customDt.Metadata.ModelId}\n\t" +
    $"Prop1: [{customDt.Prop1}] last updated on {customDt.Metadata.Prop1.LastUpdatedOn}\n\t" +
    $"Prop2: [{customDt.Prop2}] last updated on {customDt.Metadata.Prop2.LastUpdatedOn}\n\t" +
    $"ComponentProp1: [{customDt.Component1.ComponentProp1}] last updated {customDt.Component1.Metadata.ComponentProp1.LastUpdatedOn}\n\t" +
    $"ComponentProp2: [{customDt.Component1.ComponentProp2}] last updated {customDt.Component1.Metadata.ComponentProp2.LastUpdatedOn}");

Remarks

A strongly typed object type such as BasicDigitalTwin can be used as a generic type for T to indicate what type is used to deserialize the response value. It may also be deserialized into custom digital twin types that extend the BasicDigitalTwin with additional strongly typed properties provided that you know the definition of the retrieved digital twin prior to deserialization.

For more samples, see our repo samples.

Applies to

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