What3Words

About

A smorgasboard of C# .NET apps that can generate W3W map tri-words and related json data from GPS coordinates. Includes lib version and Nuget package enabling reuse of functionality. .NET Console, Blazor Server, Blazor WebApplication, MAUI, UWP and WPF examples using same API. Reverse lookup also (triwords to GPS). Generated links to Bing and Google maps as well.

• W3W: What Three Words
• Three words that uniquley define a square 3mx3m (10'x10') world-wide
• eg Try this: https://what3words.com/adjust.case.trains

Links

• Blog posts:
  • What3Words Mapping - 1
  • What3Words Mapping - 2
• Getting Started
• Get API Key
  • Can get Free key, 100 lookups per month.

Sample Output

Hi from Word3Word App!
Getting json string using httpClient.GetAsync
=====================================================
json string: {"country":"AU","square":{"southwest":{"lng":144.918576,"lat":-37.751105},"northeast":{"lng":144.91861,"lat":-37.751078}},"nearestPlace":"Essendon, Victoria","coordinates":{"lng":144.918593,"lat":-37.751092},"words":"adjust.case.trains","language":"en","map":"https:\/\/w3w.co\/adjust.case.trains"}
---------------------------
json string parsed OK

Getting json direct using httpClient.GetFromJsonAsync
=====================================================
Country: AU
Nearest Place: Essendon, Victoria
W3W Words: adjust.case.trains
---------------------------
Map Link: https://w3w.co/adjust.case.trains
The map link URL is on the clipboard.

Usage

Get What3Words Tri-words for GPS location.

• Get an API Key (See link above)
• Insert into Data.cs
  • Insert latitude and longitude coordinates into Data.cs
    OR
• Enter latitude longitude on command line.
  • AND (Optionally) enter API Key as third parameter.
• Run the app.
• Paste the Url generated into a Web Browser.

Update: Projects

• W3WProject: Standalone Console project
• WhatThreeWords: W3W in static class library
  • Note: Also available as Nuget package: Sportronics.Utility.WhatThreeWords
  • Includes class definition for W3W
  • WhatThreeWords.GetW3W() Returns W3W class instance
  • Usage:

var w3wjson = await WhatThreeWords.GetW3WAsync(latitude, longitude, w3wkey);

• WhatThreeWordsConsole: Console app that calls WhatThreeWords Class
  • Same functionality as W3WProject though.
• WhatThreeWordsNugetConsole: As previous but uses Nuget Package Sportronics.Utility.WhatThreeWords
  • Note: Original Nuget package WhatThreeWords has been deprecated.
• W3WBlazor: Blazor Server app with form entry of GPS and key.
  • Once searched can click on map link.
• NetMauiW3W: A Simple .NET MAUI app to do the same.
• GetGPSNugetConsole: (Reverse) Console app to lookup up GPS from What3Words dotted string
  • WhatThreeWords class has added method to do reverse lookup
    • In Nuget package as used by this app.

var w3wjson = await WhatThreeWords.GetGPSAsync(words3, w3wkey);

• GetGPS2BingMaps As per previous app but generates Bing Static Map URL.

• GPSMapfromW3WBlazor Get GPS from W3W and display on Bing Map inapp.

  • Requires Telerik License. See previous use of the app at Steps 1..3

• W3WFormApp Windows forms equivalent of GetGPSNugetConsole/W3WBlazor apps.

• WPF_W3W2GPS WPF version of GetGPSNugetConsole/W3WBlazor apps.

• UWP_GetGPSfromW3W UWP version of GetGPSNugetConsole/W3WBlazor apps. Uses local lib UWP_W3W2GPSLib

• .

• BlazorWA_W3W Blazor WebApplication version of GetGPSNugetConsole/W3WBlazor app. Separate Solution file available. Nb: Run the Server.