private void CreateLayer()
{
var sf = new Shapefile();
sf.CreateNewWithShapeID("", ShpfileType.SHP_POLYGON);
var shp = new Shape();
shp.Create(sf.ShapefileType);
// 24.0, 57.0
shp.AddPoint(23.8, 56.8);
shp.AddPoint(23.8, 57.2);
shp.AddPoint(24.2, 57.2);
shp.AddPoint(24.2, 56.8);
shp.AddPoint(23.8, 56.8);
Assert.IsTrue(shp.IsValid, "Shape is invalid");
sf.EditAddShape(shp);
_axMap1.AddLayer(sf, true);
_axMap1.ZoomToShape(0, 0);
_axMap1.ZoomOut(0.5);
_axMap1.ZoomToTileLevel(_axMap1.Tiles.CurrentZoom);
}