winforms-tools/eventvwr/EventEntryComparer.cs

92 строки
2.5 KiB
C#

//
// EventLogEntryComparer.cs
//
// Authors:
// Gert Driesen (drieseng@users.sourceforge.net)
//
// (C) 2006 Novell, Inc (http://www.novell.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.Globalization;
using System.Windows.Forms;
namespace Mono.Tools.EventViewer
{
public class EventLogEntryComparer : IComparer
{
private int _column;
public EventLogEntryComparer (int column)
{
_column = column;
}
public int Column
{
get { return _column; }
set { _column = value; }
}
public int Compare (object x, object y)
{
ListViewItem itemX = x as ListViewItem;
ListViewItem itemY = y as ListViewItem;
if (itemX.ListView.Sorting == SortOrder.None)
return 0;
int sortFlag = (itemX.ListView.Sorting == SortOrder.Descending) ? -1 : 1;
if (itemX == null)
return -1 * sortFlag;
if (itemY == null)
return 1 * sortFlag;
int retVal = 0;
switch (_column) {
case 1:
case 2:
DateTime dateX = DateTime.Parse (itemX.SubItems [_column].Text,
CultureInfo.CurrentCulture);
DateTime dateY = DateTime.Parse (itemY.SubItems [_column].Text,
CultureInfo.CurrentCulture);
if (_column == 1)
retVal = DateTime.Compare (dateX, dateY);
else
retVal = TimeSpan.Compare (dateX.TimeOfDay, dateY.TimeOfDay);
break;
default:
retVal = string.Compare (itemX.SubItems [_column].Text,
itemY.SubItems [_column].Text);
break;
}
return retVal * sortFlag;
}
}
}