BesAsm.Swsp.PacSizingTool.SlopedFacilityWorksheet.btnLoad_Click C# (CSharp) Метод

        private void btnLoad_Click(object sender, EventArgs e)
        {
            OpenFileDialog d = new OpenFileDialog();
              d.DefaultExt = "xml";
              d.Filter = "XML (*.xml)|*.xml";
              if (d.ShowDialog() != DialogResult.OK)
            return;

              try
              {
            string s = d.FileName;
            XmlSerializer x = new XmlSerializer(typeof(List<SlopedFacilitySegment>));
            StreamReader reader = new StreamReader(s);

            if (_facility.Segments == null)
              _facility.Segments = new List<SlopedFacilitySegment>();

            _facility.Segments.Clear();
            slopedFacilityBindingSource.ResetBindings(false);
            segmentsBindingSource.ResetBindings(false);
            _facility.Segments.AddRange(
              (List<SlopedFacilitySegment>)x.Deserialize(reader));

            _segments = _facility.Segments;
            segmentsBindingSource.DataSource = _segments; // reset the pointer

            slopedFacilityBindingSource.ResetBindings(false); // re-read all items in list and refresh displayed values
            segmentsBindingSource.ResetBindings(false);
            reader.Close();
            this.Refresh();
              }
              catch (Exception ex)
              {
            MessageBox.Show(ex.Message);
              }
        }