System.InvalidOperationException was unhandled
Message="When in VirtualMode the ListView RetrieveVirtualListItem event needs a list view SubItem for each ListView column."
Source="System.Windows.Forms"

StackTrace:
at System.Windows.Forms.ListView.WmReflectNotify(Message& m)
at System.Windows.Forms.ListView.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.SendMessage(HandleRef hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows.Forms.Control.SendMessage(Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.Control.ReflectMessageInternal(IntPtr hWnd, Message& m)
at System.Windows.Forms.Control.WmNotify(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows.Forms.NativeWindow.DefWndProc(Message& m)
at System.Windows.Forms.Control.DefWndProc(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ListView.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at WindowsApplication1.Program.Main() in C:\Documents and Settings\Paul Mutiu\My Documents\Visual Studio 2005\Projects\WindowsApplication1\WindowsApplication1\Program.cs:line 17
at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

private void QueryResults(WorkItemStore store, WorkItemCollection items, ListView list)
{
try
{
m_items = items;
// populate list
DisplayFieldList fieldList = m_items.Query.DisplayFieldList;
m_columns = new string[fieldList.Count];

list.Columns.Clear();
for (int i = 0; i < fieldList.Count; i++)
{
FieldDefinition field = fieldList[i];
list.Columns.Add(field.Name, 100, HorizontalAlignment.Left);
m_columns[i] = field.ReferenceName;
}

list.RetrieveVirtualItem += new RetrieveVirtualItemEventHandler(this.OnRetrieveVirtualItem);
list.VirtualMode = true;
list.VirtualListSize = m_items.Count;
}
catch (Exception ex) { MessageBox.Show(ex.Message); }
}

void OnRetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
if (e.ItemIndex >= m_items.Count)
{
return;
}

WorkItem item = m_items[e.ItemIndex];
string[] subItems = new string[m_columns.Length - 1];
string name = "";

for (int i = 0; i < m_columns.Length; i++)
{
object o = item[m_columns[i]];

string s;
if (o is DateTime)
{
s = ((DateTime)o).ToLocalTime().ToString();
}
else if (o != null)
{
s = o.ToString();
}
else
{
s = "<null>";
}

if (i == 0)
name = s;
else
subItems[i - 1] = s;
}

ListViewItem li = new ListViewItem(name);
li.SubItems.AddRange(subItems);
e.Item = li;
}