MessageBox中的ListBox和DisplayMember问题

Question

I'm a beginner in C#. I have problem with take DisplayMember from ListBox. I try to write simple application in access control. RacsSystem. is the API to access control server.

 private void libStrefy_SelectedIndexChanged(object sender, EventArgs e)
    {
        var attendanceZone = libStrefy.SelectedItem as AttendanceZoneData;
        if (attendanceZone != null)
        {
            CalculateAndShowZoneOccupancy(attendanceZone.ID);
            //-----------------------
            var  occupancies = RacsSystem.Instance.Integration.GetAttendanceZoneOccupancies(attendanceZone.ID,
               RacsSystem.Instance.SessionToken);
            //libOsoby.ValueMember = "ID";
           libOsoby.DisplayMember = "Name"; // bez tego nazwa obiektu
           libOsoby.DataSource = occupancies;
           libOsoby.SelectedIndex = 0;

           System.Text.StringBuilder sb = new System.Text.StringBuilder();

            foreach (var item in occupancies)
            {
                sb.Append(item.Name);
                sb.Append(" ---- ");
                sb.Append(item.Description);
                sb.Append(" ++ ");       
            }
            MessageBox.Show(sb.ToString());


        }

    }

It's OK show DisplayMember "Name" in MessageBox.

    private void button1_Click_1(object sender, EventArgs e)
    {
        System.Text.StringBuilder sb = new System.Text.StringBuilder();

         libOsoby.SelectionMode = SelectionMode.MultiSimple;

                 for (int val = 0; val < libOsoby.Items.Count; val++)
                 {
                     libOsoby.SetSelected(val, true);
                 }


                 string strText = "";
                      foreach (var x in libOsoby.SelectedItems)
                          {
                              strText = strText + x.ToString() + "\n";
                          }

                         myReader = new System.IO.StringReader(strText);


                 MessageBox.Show(strText.ToString());

    }

It's not ok show me type of data ? I don't know.

I would like the same effect as in the first example.

Answer 1

Replace strText = strText + x.ToString() + "\\n"; with following.

strText = strText + x.Text.ToString() + "\n";