private void Access_line_data_Click(object sender, EventArgs e)
         {
             //CADImage.CreateImageByExtension detects format with by the extension specified in the argument. 
             //The correct class for any supported format will be used automatically. We recommend to
             //create a new drawing object with CADImage.CreateImageByExtension if import from the existed
             //file/stream is required.
             CADImage vDrawing = CADImage.CreateImageByExtension(@"..\..\..\Files\Entities.dxf");
             vDrawing.LoadFromFile(@"..\..\..\Files\Entities.dxf");
 
             for (int i = 0; i < vDrawing.CurrentLayout.Count; i++)
             {
                 if (vDrawing.CurrentLayout.Entities[i].EntType == EntityType.Line)
                 {
                     CADLine vLine = (CADLine)vDrawing.CurrentLayout.Entities[i];
                     MessageBox.Show("Line is found. Handle = " + vLine.Handle +
                         "; X: " + vLine.Point.X + "; Y: " + vLine.Point.Y +
                         "; X1: " + vLine.Point1.X + "; Y1: " + vLine.Point1.Y);
                     break;
                 }
             }
         }