/// <summary>
/// Compares two objects and returns a value indicating whether one is less than, equal to or greater than the other.
/// </summary>
/// <param name="x">First argument.</param>
/// <param name="y">Second argument.</param>
/// <returns>a value indicating whether one is less than, equal to or greater than the other.</returns>
public int Compare(object obj0, object obj1)
{
IListItem item0 = (IListItem)obj0,
item1 = (IListItem)obj1;
// If both objects are ThumbnailListItems - check for file/folder comparison.
// Folders always should be first in sort order.
ThumbnailListItem thumbnailListItem0 = obj0 as ThumbnailListItem,
thumbnailListItem1 = obj1 as ThumbnailListItem;
if (thumbnailListItem0 != null && thumbnailListItem1 != null)
{
if (thumbnailListItem0.Pidl.Type == PidlType.File && thumbnailListItem1.Pidl.Type == PidlType.Folder)
{
return(_sortAscending ? 1 : -1);
}
else if (thumbnailListItem0.Pidl.Type == PidlType.Folder && thumbnailListItem1.Pidl.Type == PidlType.File)
{
return(_sortAscending ? -1 : 1);
}
}
string str0 = item0.GetText(_textInfoId),
str1 = item1.GetText(_textInfoId);
int result;
if (_textInfoId == ThumbnailListItem.TextInfoIdFileSize)
{
try
{
int int0 = StringToInt(str0);
int int1 = StringToInt(str1);
if (int0 > int1)
{
result = 1;
}
else if (int0 < int1)
{
result = -1;
}
else
{
result = 0;
}
}
catch
{
result = str0.CompareTo(str1);
}
}
else if (_textInfoId == ThumbnailListItem.TextInfoIdCreationDate)
{
try
{
System.DateTime date0 = System.DateTime.Parse(str0, CultureInfo.CurrentCulture),
date1 = System.DateTime.Parse(str1, CultureInfo.CurrentCulture);
result = date0.CompareTo(date1);
}
catch
{
result = str0.CompareTo(str1);
}
}
else
{
result = str0.CompareTo(str1);
}
if (_sortAscending)
{
return(result);
}
else
{
return(result * -1);
}
}