/// <summary>
/// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed.
/// <example>
/// searchforvirtualitemeventhandler.BeginInvoke(sender, e, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginInvoke(this SearchForVirtualItemEventHandler searchforvirtualitemeventhandler, Object sender, SearchForVirtualItemEventArgs e, AsyncCallback callback)
{
if (searchforvirtualitemeventhandler == null)
{
throw new ArgumentNullException("searchforvirtualitemeventhandler");
}
return(searchforvirtualitemeventhandler.BeginInvoke(sender, e, callback, null));
}
/// <summary>
/// Create a VirtualObjectListView
/// </summary>
public VirtualObjectListView()
: base()
{
VirtualMode = true; // Virtual lists have to be virtual -- no prizes for guessing that :)
CacheVirtualItems += new CacheVirtualItemsEventHandler(HandleCacheVirtualItems);
RetrieveVirtualItem += new RetrieveVirtualItemEventHandler(HandleRetrieveVirtualItem);
SearchForVirtualItem += new SearchForVirtualItemEventHandler(HandleSearchForVirtualItem);
// At the moment, we don't need to handle this event. But we'll keep this comment to remind us about it.
//this.VirtualItemsSelectionRangeChanged += new ListViewVirtualItemsSelectionRangeChangedEventHandler(VirtualObjectListView_VirtualItemsSelectionRangeChanged);
VirtualListDataSource = new VirtualListVersion1DataSource(this);
}
