How do I Custom Sort Directory Items

[anonieko@hotmail.com]

I have a directory of files and I want to sort in in Array List in
a customized way. How do I do that?[color=blue]
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class main
{
static void Main(string[] args)
{
string[] items = Directory.GetFi les( "c:\dir", "*.*");
ArrayList al = new ArrayList( items);
TransIdComparer Class myComp = new TransIdComparer Class();
al.Sort(myComp) ;
string topFile = (string) al[0];
}
}

/// <summary>
/// For example. This IComparer is used to sort based
// on the fourth character and onwards in each filename.
/// </summary>
public class TransIdComparer Class : IComparer
{
// Calls CaseInsensitive Comparer.Compar e with the parameters
reversed.
int IComparer.Compa re( Object x, Object y )
{
string a = Path.GetFileNam e( (string) x);
string b = Path.GetFileNam e( (string) y);
return ( a.Substring(3). CompareTo(b.Sub string(3)) );
}
}

[Ollie Riches]

Re: How do I Custom Sort Directory Items

check out the IComparer interface, this is eactly what it is designed for:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/

frlrfsystemcoll ectionsicompare rclasscompareto pic.asp

example:

public class myReverserClass : IComparer
{
// Calls CaseInsensitive Comparer.Compar e with the parameters reversed.
int IComparer.Compa re( Object x, Object y )
{
return( (new CaseInsensitive Comparer()).Com pare( y, x ) );
}
}

--
HTH

Ollie Riches

http://www.phoneanalyser.net

Disclaimer: Opinions expressed in this forum are my own, and not
representative of my employer.
I do not answer questions on behalf of my employer. I'm just a programmer
helping programmers.

<anonieko@hotma il.com> wrote in message
news:1109775594 .268802.136060@ l41g2000cwc.goo glegroups.com.. .[color=blue]
> I have a directory of files and I want to sort in in Array List in
> a customized way. How do I do that?[color=green]
> >
> >
> >
> >
> >
> >[/color]
> class main
> {
> static void Main(string[] args)
> {
> string[] items = Directory.GetFi les( "c:\dir", "*.*");
> ArrayList al = new ArrayList( items);
> TransIdComparer Class myComp = new TransIdComparer Class();
> al.Sort(myComp) ;
> string topFile = (string) al[0];
> }
> }
>
> /// <summary>
> /// For example. This IComparer is used to sort based
> // on the fourth character and onwards in each filename.
> /// </summary>
> public class TransIdComparer Class : IComparer
> {
> // Calls CaseInsensitive Comparer.Compar e with the parameters
> reversed.
> int IComparer.Compa re( Object x, Object y )
> {
> string a = Path.GetFileNam e( (string) x);
> string b = Path.GetFileNam e( (string) y);
> return ( a.Substring(3). CompareTo(b.Sub string(3)) );
> }
> }
>[/color]