Add import of polygon from dxf

StructureHelperCommon/Services/Exports/SinglePolyline2DImportFromDxfLogic.cs

@@ -0,0 +1,18 @@
+using netDxf.Entities;
+using System.Linq;
+
+namespace StructureHelperCommon.Services.Exports
+{
+    public class SinglePolyline2DImportFromDxfLogic : IImportFromFileLogic
+    {
+        public string FileName { get; set; }
+        public Polyline2D Polyline2D { get; private set; }
+        public void Import()
+        {
+            var importLogic = new ShapesAllImportFromDxfLogic() { FileName = FileName};
+            importLogic.Import();
+            var entities = importLogic.Entities;
+            Polyline2D = entities.Single(x => x is Polyline2D) as Polyline2D;
+        }
+    }
+}