public bool Regroup()
{
try
{
NativeMethods.API.ClearListViewGroup(Handle);
foreach (ThreadedListViewGroup grp in Groups)
{
NativeMethods.API.AddListViewGroup(Handle, grp.GroupText, grp.GroupIndex);
}
foreach (var itm in Items)
{
NativeMethods.API.AddItemToGroup(Handle, itm.Index, itm.GroupIndex);
}
APIEnableGrouping(true);
_showInGroups = true;
_autoGroup = false;
_autoGroupCol = null;
_autoGroupList.Clear();
return(true);
}
catch (Exception ex)
{
throw new SystemException("Error in ThreadedListView.Regroup: " + ex.Message);
}
}
public void Remove(string columnID)
{
ThreadedListViewColumnHeader c = this[columnID];
base.Remove(c);
RaiseThreadedListViewColumnHeaderChangedEvent(
new ThreadedListViewColumnHeader[] { c },
ThreadedListViewColumnHeaderChangedAction.Remove);
}
public virtual new object Clone()
{
ThreadedListViewColumnHeader nh = new ThreadedListViewColumnHeader(this._id, this._colValueType);
nh.Text = this.Text;
nh.Tag = this.Tag;
nh.TextAlign = this.TextAlign;
nh.Width = this.Width;
return(nh);
}
public int Add(ThreadedListViewColumnHeader colHeader)
{
int idx = base.Add(colHeader);
RaiseThreadedListViewColumnHeaderChangedEvent(
new ThreadedListViewColumnHeader[] { colHeader },
ThreadedListViewColumnHeaderChangedAction.Add);
return(idx);
}
public bool AutoGroupByColumn(int columnID)
{
if (columnID >= Columns.Count || columnID < 0)
{
return(false);
}
try
{
_autoGroupList.Clear();
foreach (var itm in Items)
{
if (
!_autoGroupList.Contains(itm.SubItems[columnID].Text == String.Empty
? _emptyAutoGroupText
: itm.SubItems[columnID].Text))
{
_autoGroupList.Add(itm.SubItems[columnID].Text == String.Empty
? EmptyAutoGroupText
: itm.SubItems[columnID].Text);
}
}
_autoGroupList.Sort();
NativeMethods.API.ClearListViewGroup(Handle);
foreach (var text in _autoGroupList)
{
NativeMethods.API.AddListViewGroup(Handle, text, _autoGroupList.IndexOf(text));
}
foreach (var itm in Items)
{
int index =
_autoGroupList.IndexOf(itm.SubItems[columnID].Text == ""
? _emptyAutoGroupText
: itm.SubItems[columnID].Text);
NativeMethods.API.AddItemToGroup(Handle, itm.Index, index);
}
APIEnableGrouping(true);
_showInGroups = true;
_autoGroup = true;
_autoGroupCol = Columns[columnID];
Refresh();
return(true);
}
catch (Exception ex)
{
throw new SystemException("Error in ThreadedListView.AutoGroupByColumn: " + ex.Message);
}
}
/// <summary>
/// Returns the index of the Column identified by column ID.
/// </summary>
/// <param name="columnID">string</param>
/// <returns>int. -1, if not found</returns>
public int GetIndexByKey(string columnID)
{
for (int i = 0; i < base.Count; i++)
{
ThreadedListViewColumnHeader c = this[i];
if (c.Key == columnID)
{
return(i);
}
}
return(-1);
}
/// <summary>
/// Returns a collection for faster column key to index lookup.
/// Can be used to create new items/subitems according to the current column keys.
/// </summary>
public ColumnKeyIndexMap GetColumnIndexMap()
{
ColumnKeyIndexMap map = new ColumnKeyIndexMap(base.Count);
lock (this) {
for (int i = 0; i < base.Count; i++)
{
ThreadedListViewColumnHeader c = this[i];
map.Add(c.Key, i);
}
}
return(map);
}
public ThreadedListViewColumnHeader Add(string id, string caption, Type valueType, int width, HorizontalAlignment textAlign)
{
ThreadedListViewColumnHeader c = new ThreadedListViewColumnHeader(id, valueType);
c.Text = caption;
c.Width = width;
c.TextAlign = textAlign;
int index = base.Add(c);
RaiseThreadedListViewColumnHeaderChangedEvent(
new ThreadedListViewColumnHeader[] { c },
ThreadedListViewColumnHeaderChangedAction.Add);
return(c);
}
