/// <summary>This allows forcing specific entries to the top of the sort order</summary>
private static string CheckSpecialCase(IMDIListItem inputValue)
{
switch (inputValue.Value)
{
case null:
case "":
return("A");
case "Unknown":
return("B");
case "Undefined":
return("C");
case "Unspecified":
return("D");
}
return("Z" + inputValue.Text);
}
/// <summary>Used for sorting. Compare 2 IMDIListItem objects. They are identical if the Text properties are the same</summary>
public int CompareTo(object obj)
{
if (obj == null)
{
return(1);
}
IMDIListItem other = obj as IMDIListItem;
if (other == null)
{
throw new ArgumentException();
}
// handle special cases
var thisValue = CheckSpecialCase(this);
var thatValue = CheckSpecialCase(other);
// compare the Text properties
return(String.Compare(thisValue, thatValue, StringComparison.InvariantCultureIgnoreCase));
}
/// <summary>Used for sorting. Compare 2 IMDIListItem objects. They are identical if the Text properties are the same</summary>
public static int Compare(IMDIListItem itemA, IMDIListItem itemB)
{
return(itemA.CompareTo(itemB));
}
