Sample code to read an Esri shapefile in .NET using Catfood.Shapefile. For full details please see https://ithoughthecamewithyou.com/post/esri-shapefile-reader-in-net

Program.cs

using Catfood.Shapefile;

using (Shapefile shapefile = new Shapefile(@"fips10c.shp"))
{
    Console.WriteLine($"Shapefile type {shapefile.Type}, contains {shapefile.Count:n0} shapes.");
    Console.WriteLine($"Bounding box is {shapefile.BoundingBox.Top:n2}, {shapefile.BoundingBox.Left:n2} - {shapefile.BoundingBox.Bottom:n2}, {shapefile.BoundingBox.Right:n2}");

    foreach(Shape shape in shapefile)
    {
        string[] metadataNames = shape.GetMetadataNames();
        foreach(string metadataName in metadataNames)
        {
            Console.WriteLine($"Shape {shape.RecordNumber} ({shape.Type})");
            Console.WriteLine("Metadata:");
            Console.WriteLine($"  {metadataName}: {shape.GetMetadata(metadataName)}");

            ShapePolygon? polygon = shape as ShapePolygon;
            if (polygon != null)
            {
                foreach (PointD[] part in polygon.Parts)
                {
                    foreach (PointD point in part)
                    {
                        Console.WriteLine($"First point: {point.X:n2}, {point.Y:n2}");
                        break;
                    }
                    break;
                }
            }
        }

        // only print the first shape
        break;
    }
}