void listViewResults_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
if (e.ItemIndex >= 0 && e.ItemIndex < dataStream.Length)
{
e.Item = new ListViewItem(dataStream[e.ItemIndex]);
}
}
private void listView_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
// Check if the item is in the local cache.
DataRow match = null;
if (dtCachedItems != null)
match = dtCachedItems.Rows.Find(e.ItemIndex + 1);
if (match == null)
{
// The item isn't in memory.
// Get a new range of 100 records.
int from, to;
if (e.ItemIndex < 50)
from = 0;
else
from = (e.ItemIndex - 50);
to = from + 100;
dtCachedItems = NorthwindDB.GetOrders(from, to);
// Don't use the MessageBox to show this information.
// Hiding any part of the ListView can retrigger this event.
lblStatus.Text = String.Format(
"Fetched rows from {0} to {1}.",
from.ToString(), to.ToString());
match = dtCachedItems.Rows.Find(e.ItemIndex + 1);
}
// Create the ListViewItem for the matching record.
e.Item = new ListViewItem(match["OrderID"].ToString());
e.Item.SubItems.Add(match["ShippedDate"].ToString());
}
void OnRetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
var item=_vmd.BoneMotions[e.ItemIndex];
e.Item = new ListViewItem(new string[]{
item.BoneName,
item.FrameNum.ToString()
});
}
private void SearchResultsListViewRetrieveVItem(object sender, RetrieveVirtualItemEventArgs e)
{
Contract.Requires(e.ItemIndex >= 0);
Contract.Requires(e.ItemIndex < this._vehicleResults.Count);
var vehicle = _vehicleResults[e.ItemIndex];
e.Item = new ListViewItem(new[] { vehicle.Id.ToString(), VehicleInfo.GetUsedCount(vehicle).ToString()});
}
public void EnumerationListView_RetrieveVirtualItem(object Sender, RetrieveVirtualItemEventArgs e)
{
if (e.ItemIndex < 0 || e.ItemIndex >= enumeration.Count)
return;
IdentifiableName item = enumeration[e.ItemIndex];
e.Item = new ListViewItem();
e.Item.Text = item.Id.ToString();
e.Item.SubItems.Add(item.Name);
}
private void listViewPrimeNumberList_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
e.Item = new ListViewItem(e.ItemIndex.ToString());
bool lock_taken = false;
calculator.BeginAccessData(ref lock_taken);
e.Item.SubItems.Add(calculator.PrimeNumberList[e.ItemIndex].ToString());
calculator.EndAccessData();
}
private void ResultList_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
if (e.ItemIndex < _searchResultInfos.Count)
{
ListViewItem listViewItem = new ListViewItem { Text = _searchResultInfos[e.ItemIndex].Title };
e.Item = listViewItem;
}
}
public ListViewItem this[int displayIndex]
{
get
{
owner.ApplyUpdateCachedItems();
if (owner.VirtualMode)
{
// if we are showing virtual items, we need to get the item from the user
RetrieveVirtualItemEventArgs rVI = new RetrieveVirtualItemEventArgs(displayIndex);
owner.OnRetrieveVirtualItem(rVI);
rVI.Item.SetItemIndex(owner, displayIndex);
return(rVI.Item);
}
else
{
if (displayIndex < 0 || displayIndex >= owner._itemCount)
{
throw new ArgumentOutOfRangeException(nameof(displayIndex), displayIndex, string.Format(SR.InvalidArgument, nameof(displayIndex), displayIndex));
}
if (owner.IsHandleCreated && !owner.ListViewHandleDestroyed)
{
return((ListViewItem)owner._listItemsTable[DisplayIndexToID(displayIndex)]);
}
else
{
Debug.Assert(owner._listViewItems is not null, "listItemsArray is null, but the handle isn't created");
return(owner._listViewItems[displayIndex]);
}
}
}
set
{
owner.ApplyUpdateCachedItems();
if (owner.VirtualMode)
{
throw new InvalidOperationException(SR.ListViewCantModifyTheItemCollInAVirtualListView);
}
if (displayIndex < 0 || displayIndex >= owner._itemCount)
{
throw new ArgumentOutOfRangeException(nameof(displayIndex), displayIndex, string.Format(SR.InvalidArgument, nameof(displayIndex), displayIndex));
}
if (owner.ExpectingMouseUp)
{
owner.ItemCollectionChangedInMouseDown = true;
}
RemoveAt(displayIndex);
Insert(displayIndex, value);
}
}
protected override void OnRetrieveVirtualItem(RetrieveVirtualItemEventArgs e)
{
base.OnRetrieveVirtualItem(e);
if (mCache[e.ItemIndex] != null) {
e.Item = mCache[e.ItemIndex];
}
else {
ListViewItem item = new ListViewItem(mItems[e.ItemIndex].OrignalLine.Replace("\t", " "));
e.Item = item;
mCache[e.ItemIndex] = item;
}
}
/// <summary>
/// Called when the control need a virtual item.
/// </summary>
/// <param name="e">The event object the user needs to fill up.</param>
protected override void OnRetrieveVirtualItem(RetrieveVirtualItemEventArgs e)
{
// Get the list view item from the user.
base.OnRetrieveVirtualItem(e);
if (e.Item != null)
{
// Go over all the sub items in the list view
foreach (ListViewItem.ListViewSubItem subItem in e.Item.SubItems)
{
// If an items text is 260 characters long, add a space so it does
// not crash the program.
if (subItem.Text.Length == 260)
{
subItem.Text = subItem.Text + " ";
}
}
}
}
private void RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
if (mCachedItem == null || mLastUpdatedItemIndex != e.ItemIndex)
{
e.Item = new ListViewItem(e.ItemIndex.ToString());
mCachedItem = e.Item;
StoredLine line = mStorage[e.ItemIndex];
e.Item.SubItems.Add(mSession.GetTimestamp(line.Ticks));
e.Item.SubItems.Add(mSession.GetProcessName(line.Pid) ?? line.Pid.ToString());
e.Item.SubItems.Add(mStorage.GetString(e.ItemIndex));
mLastUpdatedItemIndex = e.ItemIndex;
}
else
{
// we cache the listviewitem because the listview requests the same item very often!?
e.Item = mCachedItem;
}
}
/***********************************************/
void listView_players_data_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
try
{
e.Item = (ListViewItem)listView_players_data_items[e.ItemIndex];
return;
}
catch
{
e.Item = new ListViewItem();
e.Item.SubItems.Add("");
e.Item.SubItems.Add("");
e.Item.SubItems.Add("");
e.Item.SubItems.Add("");
e.Item.SubItems.Add("");
e.Item.ImageIndex = -1;
}
}
private void _culturesList_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
CultureInfo ci = _cultures[e.ItemIndex];
string[] items;
Color c;
if (ci == CultureInfo.InvariantCulture)
{
items = new string[] { "(default)", "Default Culture" };
c = Color.Gray;
}
else
{
items = new string[] { ci.Name, ci.DisplayName };
c = Color.Black;
}
e.Item = new ListViewItem(items,
ci.IsNeutralCulture || ci == CultureInfo.InvariantCulture ? 0 : 1);
e.Item.ForeColor = c;
}
private void MemoryView_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
ListViewItem theItem;
int i;
ulong toRead = mAddress + (ulong)(e.ItemIndex << 4);
if (mStoredBytes.TryGetValue(toRead, out theItem))
{
e.Item = theItem;
return;
}
StringBuilder resultName = new StringBuilder(string.Format("{0:X8}:", toRead));
for (i = 0; i < 16; i++)
resultName.Append(" ??");
e.Item = new ListViewItem(resultName.ToString());
mStoredBytes[toRead] = e.Item;
ThreadPool.QueueUserWorkItem(UpdateRow, toRead);
}
/// <summary>
/// Handle a RetrieveVirtualItem
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected virtual void HandleRetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e) {
// .NET 2.0 seems to generate a lot of these events. Before drawing *each* sub-item,
// this event is triggered 4-8 times for the same index. So we save lots of CPU time
// by caching the last result.
//System.Diagnostics.Debug.WriteLine(String.Format("HandleRetrieveVirtualItem({0})", e.ItemIndex));
if (this.lastRetrieveVirtualItemIndex != e.ItemIndex) {
this.lastRetrieveVirtualItemIndex = e.ItemIndex;
this.lastRetrieveVirtualItem = this.MakeListViewItem(e.ItemIndex);
}
e.Item = this.lastRetrieveVirtualItem;
}
private void EventList_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
if (_ItemCache != null && e.ItemIndex >= _itemCacheIndex && e.ItemIndex < _itemCacheIndex + _ItemCache.Length)
{
//キャッシュヒット
e.Item = _ItemCache[e.ItemIndex - _itemCacheIndex];
}
else
{
//キャッシュミス
e.Item = CreateListViewItem(_filterdEventSource[e.ItemIndex]);
}
}
private void MyList_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
if (_itemCache != null && e.ItemIndex >= _itemCacheIndex && e.ItemIndex < _itemCacheIndex + _itemCache.Length && _curList.Equals(sender))
{
//A cache hit, so get the ListViewItem from the cache instead of making a new one.
e.Item = _itemCache[e.ItemIndex - _itemCacheIndex];
}
else
{
//A cache miss, so create a new ListViewItem and pass it back.
TabPage tb = (TabPage)((DetailsListView)sender).Parent;
try
{
e.Item = CreateItem(tb,
_statuses[tb.Text, e.ItemIndex],
e.ItemIndex);
}
catch (Exception)
{
//不正な要求に対する間に合わせの応答
string[] sitem = {"", "", "", "", "", "", "", ""};
e.Item = new ImageListViewItem(sitem, "");
}
}
}
private void SpellList_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
e.Item = new ListViewItem(new[] { _spellList[e.ItemIndex].ID.ToString(), _spellList[e.ItemIndex].SpellNameRank });
}
private void lstInvoices_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
bool retry = true;
while (retry)
{
try { e.Item = filteredInvoices[e.ItemIndex]; retry = false; }
catch { retry = true; }
}
}
ListViewItem RetrieveVirtualItemFromOwner (int displayIndex)
{
RetrieveVirtualItemEventArgs args = new RetrieveVirtualItemEventArgs (displayIndex);
owner.OnRetrieveVirtualItem (args);
ListViewItem retval = args.Item;
retval.Owner = owner;
retval.DisplayIndex = displayIndex;
retval.Layout ();
return retval;
}
void listView_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
e.Item = GetItem(e.ItemIndex);
}
private void listViewHistory_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
lock (_document.History)
{
if ((e.ItemIndex >= 0) && (e.ItemIndex < _document.History.Count))
{
ConnectionHistoryEntry entry = _document.History[e.ItemIndex];
ListViewItem item = new ListViewItem(entry.StartTime.ToString());
item.SubItems.Add(entry.EndTime.Subtract(entry.StartTime).ToString());
item.SubItems.Add(entry.NetworkDescription);
item.Tag = entry;
e.Item = item;
}
else
{
// Return a dummy item
ListViewItem item = new ListViewItem("");
item.SubItems.Add("");
item.SubItems.Add("");
e.Item = item;
}
}
}
private void listLog_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
e.Item = new ListViewItem(new string[]
{
Program.HackerWindow.Log[e.ItemIndex].Key.ToString(),
Program.HackerWindow.Log[e.ItemIndex].Value
});
}
/// <summary>
/// The basic VirtualMode function. Dynamically returns a ListViewItem
/// with the required properties; in this case, the square of the index.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void listView1_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
//check to see if the requested item is currently in the cache
if (DisplayObjectsCache != null && e.ItemIndex >= IndexOfFirstItemInCache && e.ItemIndex < IndexOfFirstItemInCache + DisplayObjectsCache.Length)
{
//A cache hit, so get the ListViewItem from the cache instead of making a new one.
e.Item = DisplayObjectsCache[e.ItemIndex - IndexOfFirstItemInCache];
}
else
{
//A cache miss, so create a new ListViewItem and pass it back.
e.Item = CreateItemFromIndex(e.ItemIndex);
}
}
void ListViewRetrieveVirtualItemHandler (object o, RetrieveVirtualItemEventArgs args)
{
args.Item = items [args.ItemIndex];
}
private void _lvSqlData_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
e.Item = new ListViewItem(MySQLConnect.SpellProcEvent[e.ItemIndex].ToArray());
}
/// <summary>
//The Shift Key + mouse click event
/// </summary>
void listView1_RetrieveVirtualItem(object sender,RetrieveVirtualItemEventArgs e)
{
clwCategoryView.RetrieveVirtualItem -= new RetrieveVirtualItemEventHandler(listView1_RetrieveVirtualItem);
SetCommandExecutableStatus();
}
private void lstInventorySearch_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
if (searchItemCache.ContainsKey(e.ItemIndex))
{
e.Item = searchItemCache[e.ItemIndex];
}
else if (e.ItemIndex < searchRes.Count)
{
InventoryBase inv = searchRes[e.ItemIndex].Inv;
string desc = inv.Name;
if (inv is InventoryItem)
{
desc += string.Format(" - {0}", ((InventoryItem)inv).Description);
}
ListViewItem item = new ListViewItem(desc);
item.Tag = searchRes[e.ItemIndex];
e.Item = item;
searchItemCache[e.ItemIndex] = item;
}
else
{
e.Item = emptyItem;
}
}
// Vitual ListView wants data
private void keywordsListView_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
int i = e.ItemIndex;
ListViewItem li = new ListViewItem((i + 1).ToString());
if (_helpKeywords == null || i >= _helpKeywords.Count) //range check
{
e.Item = GetListViewItem(i, "??", false, 0);
return;
}
//Note: We can improve speed and smoothness with some local caching
int topicCount;
Keyword keyword = indexCache.GetKW(i, out topicCount);
if (keyword == null)
{
_helpKeywords.MoveTo(i);
keyword = (Keyword)_helpKeywords.Current;
topicCount = keyword.Topics.Count;
indexCache.Add(i, keyword, topicCount);
}
String kwText = keyword.DisplayValue;
if (keyword.IsSubkey)
kwText = " " + kwText;
e.Item = GetListViewItem(i, kwText, keyword.IsSubkey, topicCount);
}
protected virtual void OnRetrieveVirtualItem (RetrieveVirtualItemEventArgs e)
{
RetrieveVirtualItemEventHandler eh = (RetrieveVirtualItemEventHandler)Events [RetrieveVirtualItemEvent];
if (eh != null)
eh (this, e);
}
/// <summary>
/// Retrieve an item for display in the listview, first trying the cache
/// </summary>
private void listViewSessions_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
lock (m_SessionViewCache)
{
if (m_SessionViewCache.ContainsKey(e.ItemIndex))
{
e.Item = m_SessionViewCache[e.ItemIndex];
}
else
{
e.Item = GenerateListViewItem(e.ItemIndex);
m_SessionViewCache.Add(e.ItemIndex, e.Item);
}
}
}
protected virtual void OnRetrieveVirtualItem(RetrieveVirtualItemEventArgs e)
{
throw null;
}
