I want textfile in to datagrid use streamreader

StreamReader reader = new StreamReader(ofdl.FileName);
          string content = reader.ReadToEnd();
          content = Regex.Replace(content, @"\n\s.+", "");
          reader.Close();
          List<code> codes = new List<code>();

          string s = content;
          string textvalues = s;
          foreach (var item in textvalues)
          {
              codes.Add(new code() { Value = item.ToString() });
          }
          dataGrid.ItemsSource = codes;