Azure Maps (.NET)

Azure Maps SDK for .NET providing location-based services: geocoding, routing, rendering, geolocation, and weather.

Installation

# Search (geocoding, reverse geocoding)
dotnet add package Azure.Maps.Search --prerelease

# Routing (directions, route matrix)
dotnet add package Azure.Maps.Routing --prerelease

# Rendering (map tiles, static images)
dotnet add package Azure.Maps.Rendering --prerelease

# Geolocation (IP to location)
dotnet add package Azure.Maps.Geolocation --prerelease

# Weather
dotnet add package Azure.Maps.Weather --prerelease

# Resource Management (account management, SAS tokens)
dotnet add package Azure.ResourceManager.Maps --prerelease

# Required for authentication
dotnet add package Azure.Identity

Current Versions:

• Azure.Maps.Search

  : v2.0.0-beta.5

• Azure.Maps.Routing

  : v1.0.0-beta.4

• Azure.Maps.Rendering

  : v2.0.0-beta.1

• Azure.Maps.Geolocation

  : v1.0.0-beta.3

• Azure.ResourceManager.Maps

  : v1.1.0-beta.2

Environment Variables

AZURE_MAPS_SUBSCRIPTION_KEY=<your-subscription-key>
AZURE_MAPS_CLIENT_ID=<your-client-id>  # For Entra ID auth

Authentication

Subscription Key (Shared Key)

using Azure;
using Azure.Maps.Search;

var subscriptionKey = Environment.GetEnvironmentVariable("AZURE_MAPS_SUBSCRIPTION_KEY");
var credential = new AzureKeyCredential(subscriptionKey);

var client = new MapsSearchClient(credential);

Microsoft Entra ID (Recommended for Production)

using Azure.Identity;
using Azure.Maps.Search;

var credential = new DefaultAzureCredential();
var clientId = Environment.GetEnvironmentVariable("AZURE_MAPS_CLIENT_ID");

var client = new MapsSearchClient(credential, clientId);

Shared Access Signature (SAS)

using Azure;
using Azure.Core;
using Azure.Identity;
using Azure.ResourceManager;
using Azure.ResourceManager.Maps;
using Azure.ResourceManager.Maps.Models;
using Azure.Maps.Search;

// Authenticate with Azure Resource Manager
ArmClient armClient = new ArmClient(new DefaultAzureCredential());

// Get Maps account resource
ResourceIdentifier mapsAccountResourceId = MapsAccountResource.CreateResourceIdentifier(
    subscriptionId, resourceGroupName, accountName);
MapsAccountResource mapsAccount = armClient.GetMapsAccountResource(mapsAccountResourceId);

// Generate SAS token
MapsAccountSasContent sasContent = new MapsAccountSasContent(
    MapsSigningKey.PrimaryKey, 
    principalId, 
    maxRatePerSecond: 500, 
    start: DateTime.UtcNow.ToString("O"), 
    expiry: DateTime.UtcNow.AddDays(1).ToString("O"));

Response<MapsAccountSasToken> sas = mapsAccount.GetSas(sasContent);

// Create client with SAS token
var sasCredential = new AzureSasCredential(sas.Value.AccountSasToken);
var client = new MapsSearchClient(sasCredential);

Client Hierarchy

Azure.Maps.Search
└── MapsSearchClient
    ├── GetGeocoding()                    → Geocode addresses
    ├── GetGeocodingBatch()               → Batch geocoding
    ├── GetReverseGeocoding()             → Coordinates to address
    ├── GetReverseGeocodingBatch()        → Batch reverse geocoding
    └── GetPolygon()                      → Get boundary polygons

Azure.Maps.Routing
└── MapsRoutingClient
    ├── GetDirections()                   → Route directions
    ├── GetImmediateRouteMatrix()         → Route matrix (sync, ≤100)
    ├── GetRouteMatrix()                  → Route matrix (async, ≤700)
    └── GetRouteRange()                   → Isochrone/reachable range

Azure.Maps.Rendering
└── MapsRenderingClient
    ├── GetMapTile()                      → Map tiles
    ├── GetMapStaticImage()               → Static map images
    └── GetCopyrightCaption()             → Copyright info

Azure.Maps.Geolocation
└── MapsGeolocationClient
    └── GetCountryCode()                  → IP to country/region

Azure.Maps.Weather
└── MapsWeatherClient
    ├── GetCurrentWeatherConditions()     → Current weather
    ├── GetDailyForecast()                → Daily forecast
    ├── GetHourlyForecast()               → Hourly forecast
    └── GetSevereWeatherAlerts()          → Weather alerts

Core Workflows

1. Geocoding (Address to Coordinates)

using Azure;
using Azure.Maps.Search;

var credential = new AzureKeyCredential(subscriptionKey);
var client = new MapsSearchClient(credential);

Response<GeocodingResponse> result = client.GetGeocoding("1 Microsoft Way, Redmond, WA 98052");

foreach (var feature in result.Value.Features)
{
    Console.WriteLine($"Coordinates: {string.Join(",", feature.Geometry.Coordinates)}");
    Console.WriteLine($"Address: {feature.Properties.Address.FormattedAddress}");
    Console.WriteLine($"Confidence: {feature.Properties.Confidence}");
}

2. Batch Geocoding

using Azure.Maps.Search.Models.Queries;

List<GeocodingQuery> queries = new List<GeocodingQuery>
{
    new GeocodingQuery() { Query = "400 Broad St, Seattle, WA" },
    new GeocodingQuery() { Query = "1 Microsoft Way, Redmond, WA" },
    new GeocodingQuery() { AddressLine = "Space Needle", Top = 1 },
};

Response<GeocodingBatchResponse> results = client.GetGeocodingBatch(queries);

foreach (var batchItem in results.Value.BatchItems)
{
    foreach (var feature in batchItem.Features)
    {
        Console.WriteLine($"Coordinates: {string.Join(",", feature.Geometry.Coordinates)}");
    }
}

3. Reverse Geocoding (Coordinates to Address)

using Azure.Core.GeoJson;

GeoPosition coordinates = new GeoPosition(-122.138685, 47.6305637);
Response<GeocodingResponse> result = client.GetReverseGeocoding(coordinates);

foreach (var feature in result.Value.Features)
{
    Console.WriteLine($"Address: {feature.Properties.Address.FormattedAddress}");
    Console.WriteLine($"Locality: {feature.Properties.Address.Locality}");
}

4. Get Boundary Polygon

using Azure.Maps.Search.Models;

GetPolygonOptions options = new GetPolygonOptions()
{
    Coordinates = new GeoPosition(-122.204141, 47.61256),
    ResultType = BoundaryResultTypeEnum.Locality,
    Resolution = ResolutionEnum.Small,
};

Response<Boundary> result = client.GetPolygon(options);

Console.WriteLine($"Boundary copyright: {result.Value.Properties?.Copyright}");
Console.WriteLine($"Polygon count: {result.Value.Geometry.Count}");

5. Route Directions

using Azure;
using Azure.Core.GeoJson;
using Azure.Maps.Routing;
using Azure.Maps.Routing.Models;

var client = new MapsRoutingClient(new AzureKeyCredential(subscriptionKey));

List<GeoPosition> routePoints = new List<GeoPosition>()
{
    new GeoPosition(-122.34, 47.61),  // Seattle
    new GeoPosition(-122.13, 47.64)   // Redmond
};

RouteDirectionQuery query = new RouteDirectionQuery(routePoints);
Response<RouteDirections> result = client.GetDirections(query);

foreach (var route in result.Value.Routes)
{
    Console.WriteLine($"Distance: {route.Summary.LengthInMeters} meters");
    Console.WriteLine($"Duration: {route.Summary.TravelTimeDuration}");
    
    foreach (RouteLeg leg in route.Legs)
    {
        Console.WriteLine($"Leg points: {leg.Points.Count}");
    }
}

6. Route Directions with Options

RouteDirectionOptions options = new RouteDirectionOptions()
{
    RouteType = RouteType.Fastest,
    UseTrafficData = true,
    TravelMode = TravelMode.Bicycle,
    Language = RoutingLanguage.EnglishUsa,
    InstructionsType = RouteInstructionsType.Text,
};

RouteDirectionQuery query = new RouteDirectionQuery(routePoints)
{
    RouteDirectionOptions = options
};

Response<RouteDirections> result = client.GetDirections(query);

7. Route Matrix

RouteMatrixQuery routeMatrixQuery = new RouteMatrixQuery
{
    Origins = new List<GeoPosition>()
    {
        new GeoPosition(-122.34, 47.61),
        new GeoPosition(-122.13, 47.64)
    },
    Destinations = new List<GeoPosition>() 
    { 
        new GeoPosition(-122.20, 47.62),
        new GeoPosition(-122.40, 47.65)
    },
};

// Synchronous (up to 100 route combinations)
Response<RouteMatrixResult> result = client.GetImmediateRouteMatrix(routeMatrixQuery);

foreach (var cell in result.Value.Matrix.SelectMany(row => row))
{
    Console.WriteLine($"Distance: {cell.Response?.RouteSummary?.LengthInMeters}");
    Console.WriteLine($"Duration: {cell.Response?.RouteSummary?.TravelTimeDuration}");
}

// Asynchronous (up to 700 route combinations)
RouteMatrixOptions routeMatrixOptions = new RouteMatrixOptions(routeMatrixQuery)
{
    TravelTimeType = TravelTimeType.All,
};
GetRouteMatrixOperation asyncResult = client.GetRouteMatrix(WaitUntil.Completed, routeMatrixOptions);

8. Route Range (Isochrone)

RouteRangeOptions options = new RouteRangeOptions(-122.34, 47.61)
{
    TimeBudget = new TimeSpan(0, 20, 0)  // 20 minutes
};

Response<RouteRangeResult> result = client.GetRouteRange(options);

// result.Value.ReachableRange contains the polygon
Console.WriteLine($"Boundary points: {result.Value.ReachableRange.Boundary.Count}");

9. Get Map Tiles

using Azure;
using Azure.Maps.Rendering;

var client = new MapsRenderingClient(new AzureKeyCredential(subscriptionKey));

int zoom = 10;
int tileSize = 256;

// Convert coordinates to tile index
MapTileIndex tileIndex = MapsRenderingClient.PositionToTileXY(
    new GeoPosition(13.3854, 52.517), zoom, tileSize);

// Fetch map tile
GetMapTileOptions options = new GetMapTileOptions(
    MapTileSetId.MicrosoftImagery,
    new MapTileIndex(tileIndex.X, tileIndex.Y, zoom)
);

Response<Stream> mapTile = client.GetMapTile(options);

// Save to file
using (FileStream fileStream = File.Create("./MapTile.png"))
{
    mapTile.Value.CopyTo(fileStream);
}

10. IP Geolocation

using System.Net;
using Azure;
using Azure.Maps.Geolocation;

var client = new MapsGeolocationClient(new AzureKeyCredential(subscriptionKey));

IPAddress ipAddress = IPAddress.Parse("2001:4898:80e8:b::189");
Response<CountryRegionResult> result = client.GetCountryCode(ipAddress);

Console.WriteLine($"Country ISO Code: {result.Value.IsoCode}");

11. Current Weather

using Azure;
using Azure.Core.GeoJson;
using Azure.Maps.Weather;

var client = new MapsWeatherClient(new AzureKeyCredential(subscriptionKey));

var position = new GeoPosition(-122.13071, 47.64011);
var options = new GetCurrentWeatherConditionsOptions(position);

Response<CurrentConditionsResult> result = client.GetCurrentWeatherConditions(options);

foreach (var condition in result.Value.Results)
{
    Console.WriteLine($"Temperature: {condition.Temperature.Value} {condition.Temperature.Unit}");
    Console.WriteLine($"Weather: {condition.Phrase}");
    Console.WriteLine($"Humidity: {condition.RelativeHumidity}%");
}

Key Types Reference

Search Package

MapsSearchClient

GeocodingResponse

GeocodingBatchResponse

GeocodingQuery

ReverseGeocodingQuery

GetPolygonOptions

Boundary

BoundaryResultTypeEnum

ResolutionEnum

Routing Package

MapsRoutingClient

RouteDirectionQuery

RouteDirectionOptions

RouteDirections

RouteLeg

RouteMatrixQuery

RouteMatrixResult

RouteRangeOptions

RouteRangeResult

RouteType

TravelMode

Rendering Package

MapsRenderingClient

GetMapTileOptions

MapTileIndex

MapTileSetId

Common Types

GeoPosition

GeoBoundingBox

Best Practices

1. Use Entra ID for production — Prefer over subscription keys
2. Batch operations — Use batch geocoding for multiple addresses
3. Cache results — Geocoding results don't change frequently
4. Use appropriate tile sizes — 256 or 512 pixels based on display
5. Handle rate limits — Implement exponential backoff
6. Use async route matrix — For large matrix calculations (>100)
7. Consider traffic data — Set

   UseTrafficData = true

   for accurate ETAs

Error Handling

try
{
    Response<GeocodingResponse> result = client.GetGeocoding(address);
}
catch (RequestFailedException ex)
{
    Console.WriteLine($"Status: {ex.Status}");
    Console.WriteLine($"Error: {ex.Message}");
    
    switch (ex.Status)
    {
        case 400:
            // Invalid request parameters
            break;
        case 401:
            // Authentication failed
            break;
        case 429:
            // Rate limited - implement backoff
            break;
    }
}

Related SDKs

Azure.Maps.Search

dotnet add package Azure.Maps.Search --prerelease

Azure.Maps.Routing

dotnet add package Azure.Maps.Routing --prerelease

Azure.Maps.Rendering

dotnet add package Azure.Maps.Rendering --prerelease

Azure.Maps.Geolocation

dotnet add package Azure.Maps.Geolocation --prerelease

Azure.Maps.Weather

dotnet add package Azure.Maps.Weather --prerelease

Azure.ResourceManager.Maps

dotnet add package Azure.ResourceManager.Maps --prerelease

Reference Links

When to Use

This skill is applicable to execute the workflow or actions described in the overview.

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