/// <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)
{
// Cast the objects to be compared to ListViewItem objects
ListViewItem listviewX = (ListViewItem)x;
ListViewItem listviewY = (ListViewItem)y;
// Compare the two items
int compareResult = ListViewItemSorter.Compare(listviewX, listviewY);
switch (Order)
{
// Calculate correct return value based on object comparison
case SortOrder.Ascending:
// Ascending sort is selected, return normal result of compare operation
return(compareResult);
case SortOrder.Descending:
// Descending sort is selected, return negative result of compare operation
return(-compareResult);
case SortOrder.None:
default:
// Return '0' to indicate they are equal
return(0);
}
}
/// <summary>
/// Class constructor. Initializes various elements
/// </summary>
public ListViewColumnSorter(ListViewItemSorter s)
{
// Initialize the column to '0'
SortColumn = 0;
// Initialize the sort order to 'none'
Order = SortOrder.None;
// Initialize the CaseInsensitiveComparer object
ListViewItemSorter = s;
}