Read Features from OpenStreetMap (OSM) Files using C# | https://blog.aspose.com/2021/08/23/read-features-from-open-street-map-osm-files-using-csharp/

01_Read_Features_from_OpenStreetMap_OSM_Files_using_CSharp.md

You can find detailed information at: Read Features from OpenStreetMap (OSM) Files using C#

Read_Features_From_OSM.cs

using (var layer = Drivers.OsmXml.OpenLayer(dataDir + "fountain.osm"))
{
    // Get features count
    int count = layer.Count;

    Console.WriteLine("Layer count: " + count);

    // Iterate through all the features.
    foreach (Feature feature in layer)
    {
        // Print to the console
        Console.WriteLine(feature.Geometry.AsText());
    }
}