51Degrees Device Detection .NET  4.4

Device detection services for 51Degrees Pipeline


This example shows how to use the 51Degrees Cloud service to lookup the details of a device based on a given 'native model name'. Native model name is a string of characters that are returned from a query to the device's OS. There are different mechanisms to get native model names for Android devices and iOS devices

This example is available in full on GitHub.

To run this example, you will need to create a resource key. The resource key is used as shorthand to store the particular set of properties you are interested in as well as any associated license keys that entitle you to increased request limits and/or paid-for properties.

You can create a resource key using the 51Degrees Configurator.

Required NuGet Dependencies:

/* *********************************************************************
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* Copyright 2022 51 Degrees Mobile Experts Limited, Davidson House,
* Forbury Square, Reading, Berkshire, United Kingdom RG1 3EU.
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* amended by the European Commission) shall be deemed incompatible for
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using FiftyOne.Pipeline.CloudRequestEngine.FlowElements;
using FiftyOne.Pipeline.Core.FlowElements;
using Microsoft.Extensions.Logging;
using System;
using System.IO;
using System.Net.Http;
public class Program
public class Example
// Example values to use when looking up device details from native model names.
private const string _nativeModel1 = "SC-03L";
private const string _nativeModel2 = "iPhone11,8";
public void Run(string resourceKey, ILoggerFactory loggerFactory,
TextWriter output, string cloudEndPoint = "")
output.WriteLine("This example shows the details of devices " +
"associated with a given 'native model name'.");
output.WriteLine($"The native model name can be retrieved by " +
$"code running on the device (For example, a mobile app).");
output.WriteLine($"For Android devices, see " +
output.WriteLine($"For iOS devices, see " +
HttpClient httpClient = new HttpClient();
// This example creates the pipeline and engines in code. For a demonstration
// of how to do this using a configuration file instead, see the TacLookup example.
// For more information about builders in general see the documentation at
// https://51degrees.com/documentation/_concepts__configuration__builders__index.html
var cloudRequestEngineBuilder = new CloudRequestEngineBuilder(loggerFactory, httpClient)
// If a cloud endpoint has been provided then set the
// cloud pipeline endpoint.
if (string.IsNullOrWhiteSpace(cloudEndPoint) == false)
// Create the cloud request engine.
using (var cloudEngine = cloudRequestEngineBuilder.Build())
// Create the hardware profile engine to process the response from the
// request engine.
using (var propertyKeyedEngine = new HardwareProfileCloudEngineBuilder(loggerFactory)
// Create the pipeline using the engines.
using (var pipeline = new PipelineBuilder(loggerFactory)
// Pass a native model into the pipeline and list the matching devices.
AnalyseNativeModel(_nativeModel1, pipeline, output);
// Repeat for an alternative native model name.
AnalyseNativeModel(_nativeModel2, pipeline, output);
static void AnalyseNativeModel(string nativemodel, IPipeline pipeline, TextWriter output)
// Create the FlowData instance. This is wrapped in a using block to ensure
// resources are disposed correctly.
using (var data = pipeline.CreateFlowData())
// Add the native model key as evidence.
data.AddEvidence(Shared.Constants.EVIDENCE_QUERY_NATIVE_MODEL_KEY, nativemodel);
// Process the supplied evidence.
// Get result data from the flow data.
var result = data.Get<MultiDeviceDataCloud>();
output.WriteLine($"Which devices are associated with the " +
$"native model name '{nativemodel}'?");
// The 'MultiDeviceDataCloud' object contains one or more instances
// implementing 'IDeviceData'.
// This is the same interface used for standard device detection, so we have
// access to all the same properties.
foreach (var device in result.Profiles)
var vendor = device.HardwareVendor.GetHumanReadable();
var name = device.HardwareName.GetHumanReadable();
var model = device.HardwareModel.GetHumanReadable();
output.WriteLine($"\t{vendor} {name} ({model})");
static void Main(string[] args)
// Use the command line args to get the resource key if present.
// Otherwise, get it from the environment variable.
string resourceKey = args.Length > 0 ? args[0] :
// Configure a logger to output to the console.
var loggerFactory = new LoggerFactory();
var logger = loggerFactory.CreateLogger<Program>();
if (string.IsNullOrEmpty(resourceKey))
logger.LogError($"No resource key specified on the command line or in the " +
$"environment variable '{ExampleUtils.RESOURCE_KEY_ENV_VAR}'. " +
$"The 51Degrees cloud service is accessed using a 'ResourceKey'. " +
$"For more information " +
$"see https://51degrees.com/documentation/_info__resource_keys.html. " +
$"Native model lookup is not available as a free service. This means that " +
$"you will first need a license key, which can be purchased from our " +
$"pricing page: https://51degrees.com/pricing. Once this is done, a resource " +
$"key with the properties required by this example can be created at " +
$"https://configure.51degrees.com/QKyYH5XT. You can now populate the " +
$"environment variable mentioned at the start of this message with the " +
$"resource key or pass it as the first argument on the command line.");
new Example().Run(resourceKey, loggerFactory, Console.Out);
// Dispose the logger to ensure any messages get flushed