/// <summary>
/// Sets the image of the sorted ColumnHeader.
/// </summary>
/// <param name="column"></param>
/// <param name="sortorder"></param>
protected void SetImage(int column, VelerSoftware.SZC.ListViewStored.Collections.SortOrder sortorder)
{
// Nothing to do
if (this.listview.SmallImageList == null)
{
return;
}
string key = String.Empty;
foreach (ColumnHeader ch in this.ListView.Columns)
{
ch.ImageKey = null;
}
if (sortorder == VelerSoftware.SZC.ListViewStored.Collections.SortOrder.Ascending)
{
key = imagekeyup;
}
else
{
key = imagekeydown;
}
if (key != null && this.listview.SmallImageList.Images.ContainsKey(key))
{
this.ListView.Columns[column].ImageKey = key;
}
}
/// <summary>
/// Sorts the ListView by the specified column.
/// </summary>
/// <param name="column"></param>
public void Sort(int column)
{
// Toggle ASC and DESC
if (column == lastsortcolumn)
{
if (sortorder == VelerSoftware.SZC.ListViewStored.Collections.SortOrder.Ascending)
{
sortorder = VelerSoftware.SZC.ListViewStored.Collections.SortOrder.Descending;
}
else
{
sortorder = VelerSoftware.SZC.ListViewStored.Collections.SortOrder.Ascending;
}
}
else
{
sortorder = VelerSoftware.SZC.ListViewStored.Collections.SortOrder.Ascending;
}
lastsortcolumn = column;
// Get the columns comparer (if the column ist registered use the StringComparer by default)
ISortComparer c = null;
if (comparercollection.ContainsKey(this.ListView.Columns[column].Text))
{
c = comparercollection[this.ListView.Columns[column].Text];
}
else
{
c = new VelerSoftware.SZC.ListViewStored.Collections.NameComparer();
}
// Initialize the ListViewItemComparer
ListViewItemComparer lvc = new ListViewItemComparer(column, c);
lvc.SortOrder = sortorder;
this.ListView.ListViewItemSorter = lvc;
// Sort!
this.ListView.Sort();
// Set ColumnHeaders image
SetImage(column, sortorder);
}
