DAWA Address

Provides a streaming interface DAWA Address API (Datafordeleren and Dataforsyningen).

It does simple translation from Danish to English and enables access to both full-load and the changes API.

NOTE:

Dataforsyningen API is closing down (April 2026) and it is not compatible with the Datafordeleren API, so there is no longer a unified interface, but a client for Dataforsyningen and one for Datafordeleren. When Dataforsyningen address API has bee nclosed down, the client will be removed from the project.

You can get the NuGet package here.

Get latest transaction

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();

Get all access addresses

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();

await foreach (var accessAddress in client.GetAllAccessAddresses(transaction.Id))
{
    // Do your logic here
}

Get all access addresses

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();

await foreach (var unitAddress in client.GetAllUnitAddresses(transaction.Id))
{
    // Do your logic here
}

Get all roads

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();

await foreach (var accessAddress in client.GetAllRoadsAsync(transaction.Id))
{
    // Do your logic here
}

Get all post codes

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();

await foreach (var postCode in client.GetAllPostCodesAsync(transaction.Id))
{
    // Do your logic here
}

Get all named road municipal districts

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();

await foreach (var postCode in client.GetAllNamedRoadMunicipalDistrictAsync(transaction.Id))
{
    // Do your logic here
}

Get access address changes

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();
// You should use your own fromTransactionId here.
var fromTransactionId = transaction.Id - 1000;
var toTransactionId = transaction.Id;

await foreach (var change in client.GetChangesAccessAddressAsync(fromTransactionId, toTransactionId))
{
    // Do your logic here
}

Get unit address changes

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();
// You should use your own fromTransactionId here.
var fromTransactionId = transaction.Id - 1000;
var toTransactionId = transaction.Id;

await foreach (var change in client.GetChangesUnitAddressAsync(fromTransactionId, toTransactionId))
{
    // Do your logic here
}

Get road code changes

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();
// You should use your own fromTransactionId here.
var fromTransactionId = transaction.Id - 1000;
var toTransactionId = transaction.Id;

await foreach (var change in client.GetChangesRoadsAsync(fromTransactionId, toTransactionId))
{
    // Do your logic here
}

Get post code changes

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();
// You should use your own fromTransactionId here.
var fromTransactionId = transaction.Id - 1000;
var toTransactionId = transaction.Id;

await foreach (var change in client.GetChangesPostCodesAsync(fromTransactionId, toTransactionId))
{
    // Do your logic here
}

Get named road municipal district changes

var httpClient = new HttpClient();
var client = new DawaClient(httpClient);

var transaction = await client.GetLatestTransactionAsync();
// You should use your own fromTransactionId here.
var fromTransactionId = transaction.Id - 1000;
var toTransactionId = transaction.Id;

await foreach (var change in client.GetChangesNamedRoadMunicipalDistrictAsync(fromTransactionId, toTransactionId))
{
    // Do your logic here
}