/// <summary>
/// Sorts the items in the list on the specified <paramref name="columnIndex" />
/// and draws a sort direction arrow to the column header.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="columnIndex">Index of the column.</param>
/// <param name="comparer">The list item comparer used for the sorting.</param>
public static void Sort(this ListView source, int columnIndex, IComparer comparer)
{
if (source == null)
{
return;
}
// Remove any existing direction arrows.
if (columnIndex != -1)
{
source.Columns[columnIndex].Text = source.Columns[columnIndex].Text.TrimEnd(DescendingOrder, AscendingOrder);
source.Columns[columnIndex].Text = source.Columns[columnIndex].Text.Trim();
}
// Set the arrow characters to show the sort order
if (source.Sorting == SortOrder.Ascending)
{
// Set the sort column to the new column.
source.Sorting = SortOrder.Descending;
source.Columns[columnIndex].Text = string.Format("{0} {1}", source.Columns[columnIndex].Text, AscendingOrder);
}
else
{
source.Sorting = SortOrder.Ascending;
source.Columns[columnIndex].Text = string.Format("{0} {1}", source.Columns[columnIndex].Text, DescendingOrder);
}
// Set the ListViewItemSorter property to a new ListViewItemComparer object.
source.ListViewItemSorter = comparer;
// Call the sort method to manually sort.
source.Sort();
// Resize the columns to fit the contents.
source.AutoResizeAllColumns();
}
