/// <summary>
/// This method is inherited from the IComparer interface. It compares the two objects passed using a case insensitive comparison.
/// </summary>
/// <param name="x">First object to be compared</param>
/// <param name="y">Second object to be compared</param>
/// <returns>The result of the comparison. "0" if equal, negative if 'x' is less than 'y' and positive if 'x' is greater than 'y'</returns>
public int Compare(object x, object y)
{
int compareResult = 0;
Copyinfo.Forms.Controls.ListView.TBListViewItem listviewX, listviewY;
// Cast the objects to be compared to ListViewItem objects
listviewX = (Copyinfo.Forms.Controls.ListView.TBListViewItem)x;
listviewY = (Copyinfo.Forms.Controls.ListView.TBListViewItem)y;
string a = listviewX.SubItems[ColumnToSort].Text;
string b = listviewY.SubItems[ColumnToSort].Text;
// Compare the two items
if (ItsColumnWithInt(ColumnToSort))
{
compareResult = ObjectCompare.Compare(int.Parse(a), int.Parse(b));
}
else
if (ItsColumnWithDate(ColumnToSort))
{
switch (this.additionalItemType)
{
case Copyinfo.Forms.Controls.ListView.TBListViewItem.AdditionalItemClassType.None:
compareResult = 0;
break;
case Copyinfo.Forms.Controls.ListView.TBListViewItem.AdditionalItemClassType.MachineRecord:
Copyinfo.Database.MachineRecord recordX = (Copyinfo.Database.MachineRecord)listviewX.additionalItem;
Copyinfo.Database.MachineRecord recordY = (Copyinfo.Database.MachineRecord)listviewY.additionalItem;
compareResult = DateTime.Compare(recordX.datetime, recordY.datetime);
break;
case Copyinfo.Forms.Controls.ListView.TBListViewItem.AdditionalItemClassType.Device:
Copyinfo.Database.Device deviceX = (Copyinfo.Database.Device)listviewX.additionalItem;
Copyinfo.Database.Device deviceY = (Copyinfo.Database.Device)listviewY.additionalItem;
compareResult = DateTime.Compare(deviceX.instalation_datetime, deviceY.instalation_datetime);
break;
}
}
else
{
compareResult = ObjectCompare.Compare(a, b);
}
// Calculate correct return value based on object comparison
if (OrderOfSort == SortOrder.Ascending)
{
// Ascending sort is selected, return normal result of compare operation
return(compareResult);
}
else if (OrderOfSort == SortOrder.Descending)
{
// Descending sort is selected, return negative result of compare operation
return(-compareResult);
}
else
{
// Return '0' to indicate they are equal
return(0);
}
//int compareResult;
//System.Windows.Forms.ListViewItem listviewX, listviewY;
//// Cast the objects to be compared to ListViewItem objects
//listviewX = (System.Windows.Forms.ListViewItem)x;
//listviewY = (System.Windows.Forms.ListViewItem)y;
//string a = listviewX.SubItems[ColumnToSort].Text;
//string b = listviewY.SubItems[ColumnToSort].Text;
//// Compare the two items
//if (itsColumnWithInt(ColumnToSort))
// compareResult = ObjectCompare.Compare(int.Parse(a), int.Parse(b));
//else
//if (itsColumnWithDate(ColumnToSort))
//{
// Copyinfo.Forms.TBListViewItem_MachineRecord recordA = (Copyinfo.Forms.TBListViewItem_MachineRecord)x;
// Copyinfo.Forms.TBListViewItem_MachineRecord recordB = (Copyinfo.Forms.TBListViewItem_MachineRecord)y;
// compareResult = DateTime.Compare(recordA.record.datetime, recordB.record.datetime);
//}
//else
//{
// compareResult = ObjectCompare.Compare(a, b);
//}
//// Calculate correct return value based on object comparison
//if (OrderOfSort == SortOrder.Ascending)
//{
// // Ascending sort is selected, return normal result of compare operation
// return compareResult;
//}
//else if (OrderOfSort == SortOrder.Descending)
//{
// // Descending sort is selected, return negative result of compare operation
// return (-compareResult);
//}
//else
//{
// // Return '0' to indicate they are equal
// return 0;
//}
}