How to get the last selected item in multiselect ListBox?

How to get the last selected item in a .Net Forms multiselect ListBox? Apparently if I select an item in the listbox and then select another 10 the selected item is the first one.

I would like to obtain the last element that I selected/deselected.

From stackoverflow

• Not sure I understand the question, but the last selected item will be the last in the SelectedItems array, so something like this should work:

  ListItem i = list.SelectedItems[list.SelectedItems.Length-1];
  

• I would take this general approach:

  Listen for the SelectedIndexChanged event and scan through the SelectedIndices collection every time.

  Keep a separate list of all selected indices, appending ones that have not been in the list, removing those that have been de-selected.

  The separate list will contain the indexes in the chronological order they were selected by the user. The last element always is the most recently selected index.

  // for the sake of the example, I defined a single List<int>
  List<int> listBox1_selection = new List<int>();
  
  private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
  {
      TrackSelectionChange((ListBox)sender, listBox1_selection);
  }
  
  private void TrackSelectionChange(ListBox lb, List<int> selection)
  {
      ListBox.SelectedIndexCollection sic = lb.SelectedIndices;
      foreach (int index in sic)
          if (!selection.Contains(index)) selection.Add(index);
  
      foreach (int index in new List<int>(selection))
          if (!sic.Contains(index)) selection.Remove(index);
  }
  

  Germstorm : Thank you very much, you have both have been helpful

• Try this

   private void listBox1_MouseUp(object sender, MouseEventArgs e)
      {
          int jj = listBox1.IndexFromPoint(e.X, e.Y);
          object Test = listBox1.Items[jj];
          object LatestItemSelected;
          if(listBox1.SelectedItems.Contains(Test))
              LatestItemSelected = Test;
      }
  

  Obviously LatestItemSelected is redundant and is there to emphasize that you have found your item.