51Degrees Device Detection .NET  4.1

Device detection services for 51Degrees Pipeline


This example shows how to iterate through all properties returned from a request to the cloud service.

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.

/* *********************************************************************
* This Original Work is copyright of 51 Degrees Mobile Experts Limited.
* Copyright 2019 51 Degrees Mobile Experts Limited, 5 Charlotte Close,
* Caversham, Reading, Berkshire, United Kingdom RG4 7BY.
* This Original Work is licensed under the European Union Public Licence (EUPL)
* v.1.2 and is subject to its terms as set out below.
* If a copy of the EUPL was not distributed with this file, You can obtain
* one at https://opensource.org/licenses/EUPL-1.2.
* The 'Compatible Licences' set out in the Appendix to the EUPL (as may be
* amended by the European Commission) shall be deemed incompatible for
* the purposes of the Work and the provisions of the compatibility
* clause in Article 5 of the EUPL shall not apply.
* If using the Work as, or as part of, a network application, by
* including the attribution notice(s) required under Article 5 of the EUPL
* in the end user terms of the application under an appropriate heading,
* such notice(s) shall fulfill the requirements of that article.
* ********************************************************************* */
using FiftyOne.Pipeline.Core.FlowElements;
using FiftyOne.Pipeline.Engines.Data;
using System;
using System.Collections;
using System.Linq;
class Program
private static string mobileUserAgent =
"Mozilla/5.0 (Linux; Android 9; SAMSUNG SM-G960U) " +
"AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/10.1 " +
"Chrome/71.0.3578.99 Mobile Safari/537.36";
static void Main(string[] args)
// Obtain a resource key for free at https://configure.51degrees.com
string resourceKey = "!!YOUR_RESOURCE_KEY!!";
if (resourceKey.StartsWith("!!"))
Console.WriteLine("You need to create a resource key at " +
"https://configure.51degrees.com and paste it into the code, " +
"replacing !!YOUR_RESOURCE_KEY!!.");
Console.WriteLine("Make sure to include all the properties " +
"that you want to see displayed by this example.");
// Create the pipeline
using (var pipeline = new DeviceDetectionPipelineBuilder()
// Tell it that we want to use cloud and pass our resource key.
// Output details for a mobile User-Agent.
AnalyseUserAgent(mobileUserAgent, pipeline);
#if (DEBUG)
Console.WriteLine("Done. Press any key to exit.");
static void AnalyseUserAgent(string userAgent, IPipeline pipeline)
// Create the FlowData instance.
var data = pipeline.CreateFlowData();
// Add a User-Agent as evidence.
data.AddEvidence(FiftyOne.Pipeline.Core.Constants.EVIDENCE_QUERY_USERAGENT_KEY, userAgent);
// Process the supplied evidence.
// Get device data from the flow data.
var device = data.Get<IDeviceData>();
Console.WriteLine($"What property values are associated with " +
$"the User-Agent '{userAgent}'?");
// Iterate through device data results, displaying all values.
foreach (var property in device.AsDictionary()
.OrderBy(p => p.Key))
Console.WriteLine($"{property.Key} = {GetValueToOutput(property.Value)}");
private static string GetValueToOutput(object propertyValue)
if(propertyValue == null)
return "NULL";
var basePropetyType = propertyValue.GetType();
var basePropertyValue = propertyValue;
if (propertyValue is IAspectPropertyValue aspectPropertyValue)
if (aspectPropertyValue.HasValue)
// Get the type and value parameters from the
// AspectPropertyValue instance.
basePropetyType = basePropetyType.GenericTypeArguments[0];
basePropertyValue = aspectPropertyValue.Value;
// The property has no value so output the reason.
basePropetyType = typeof(string);
basePropertyValue = $"NO VALUE ({aspectPropertyValue.NoValueMessage})";
if (basePropetyType != typeof(string) &&
// Property is an IEnumerable (that is not a string)
// so return a comma-separated list of values.
var collection = basePropertyValue as IEnumerable;
var output = "";
foreach (var entry in collection)
if (output.Length > 0) { output += ","; }
output += entry.ToString();
return output;
var str = basePropertyValue.ToString();
// Truncate any long strings to 200 characters
if (str.Length > 200)
str = str.Remove(200);
str += "...";
return str;