internal RowSorterHelper GetRowSorterHelper()
{
for (int i = 0; i < rowSorterList.Count; i++)
{
RowSorterHelper rs = (RowSorterHelper)rowSorterList[i];
if (rs != null && rs.ColumnIndex == LastSortedColumn)
{
return(rs);
}
}
return(null);
}
public int Compare(object obj1, object obj2)
{
ListViewItem item1 = (ListViewItem)obj1;
ListViewItem item2 = (ListViewItem)obj2;
RowSorterHelper rs = listView.GetRowSorterHelper();
string string1 = item1.Text;
string string2 = item2.Text;
int result = 0;
if (listView.LastSortedColumn != 0)
{
// adjust the objets if we have to sort subitems
string1 = item1.SubItems[listView.LastSortedColumn].Text;
string2 = item2.SubItems[listView.LastSortedColumn].Text;
Debug.Assert(obj1 != null && obj2 != null);
}
if (rs != null)
{
if (rs.Format == SortedListViewFormatType.String)
{
result = CompareStrings(string1, string2, listView.Sorting);
}
else if (rs.Format == SortedListViewFormatType.Numeric)
{
result = CompareNumbers(string1, string2, listView.Sorting);
}
else if (rs.Format == SortedListViewFormatType.Date)
{
result = CompareDates(string1, string2, listView.Sorting);
}
else if (rs.Format == SortedListViewFormatType.Custom)
{
if (rs.SortEvent != null)
{
result = rs.SortEvent((ListViewItem)obj1, (ListViewItem)obj2);
if (listView.Sorting == SortOrder.Descending)
{
result *= -1;
}
}
}
}
else if (rs == null)
{
// Consider column as strings
result = CompareStrings(string1, string2, listView.Sorting);
}
return(result);
}