C#

Trace.Listeners.Add(new TextWriterTraceListener(Console.Out));

using System;
using System.Collections;
using System.Drawing;
using System.Windows.Forms;
 
class Test : Form
{
  static void Main(string[] args)
  {
    bool mutuallyExclusive = false;
    try
    {
      if (args.Length > 0)
      {
        mutuallyExclusive = bool.Parse(args[0]);
      }
    }
    catch
    {
      Console.Error.WriteLine("Invalid argument; expecting \"true\" or \"false\".");
      Environment.Exit(87); // ERROR_INVALID_PARAMETER
    }
 
    Application.Run(new Test(mutuallyExclusive));
  }
 
  Test(bool mutuallyExclusive)
  {
    ListView[] views = new ListView[] {
      new ListView(),
      new ListView()
      };
 
    foreach (ListView view in views)
    {
      view.HideSelection = false;
      for (int i = 0; i < 5; i++)
      {
        ListViewItem item = new ListViewItem("Item " + i);
        view.Items.Add(item);
      }
    }
 
    Controls.AddRange(views);
 
    views[0].Name = "view1";
    views[0].Location = new Point(8, 8);
    views[0].Size = new Size(200, 100);
 
    views[1].Name = "view2";
    views[1].Location = new Point(views[0].Width + 8, 8);
    views[1].Size = views[0].Size;
 
    Width = 24 + views[0].Width + views[1].Width;
    Height = 24 + views[0].Height + views[1].Height;
 
    new ListViewSelectionManager(mutuallyExclusive).AddRange(views);
 
    Text = "Mutually Exclusive ListView Selection Example";
  }
}
 
public class ListViewSelectionManager
{
  bool mutuallyExclusive = false;
  ArrayList views = new ArrayList();
  bool clearing = false;
 
  public ListViewSelectionManager(bool mutuallyExclusive)
  {
    this.mutuallyExclusive = mutuallyExclusive;
  }
 
  ListViewSelectionManager() {}
 
  public void AddRange(ListView[] views)
  {
    foreach (ListView view in views)
    {
      view.SelectedIndexChanged += new EventHandler(OnSelectedIndexChanged);
      this.views.Add(view);
    }
  }
 
  void OnSelectedIndexChanged(object sender, EventArgs e)
  {
    if (sender == null) throw new ArgumentNullException("sender");
    Control c = sender as Control;
 
    Console.WriteLine("SelectedIndexChanged event raised from " + c.Name);
    OnListViewSelectionChanged(sender, e);
    if (mutuallyExclusive && !clearing)
    {
      clearing = true;
 
      foreach (ListView view in views)
      {
        if (sender != view)
        {
          Console.WriteLine("Clearing selection for " + view.Name);
          view.SelectedItems.Clear();
        }
      }
 
      clearing = false;
    }
  }
 
  public event EventHandler ListViewSelectionChanged;
 
  protected virtual void OnListViewSelectionChanged(object lv, EventArgs e)
  {
    if (ListViewSelectionChanged != null)
    {
      ListViewSelectionChanged(lv, e);
    }
  }
 
  public ICollection SelectedItems
  {
    get
    {
      ArrayList list = new ArrayList();
      foreach (ListView view in views)
      {
        list.AddRange(view.SelectedItems);
      }
 
      return list;
    }
  }
}