C# ArrayList Sort(IComparer)
Description
ArrayList Sort(IComparer) sorts the elements in the
entire ArrayList using the specified comparer.
Syntax
ArrayList.Sort(IComparer) has the following syntax.
public virtual void Sort(
IComparer comparer
)
Parameters
ArrayList.Sort(IComparer) has the following parameters.
comparer- The IComparer implementation to use when comparing elements.comparer- -or-comparer- A null reference (Nothing in Visual Basic) to use the IComparable implementation of each element.
Returns
ArrayList.Sort(IComparer) method returns
Example
The following code example shows how to sort the values in an ArrayList using the default comparer and a custom comparer that reverses the sort order.
using System;/*w w w . j a v a 2s .co m*/
using System.Collections;
public class SamplesArrayList {
public class myReverserClass : IComparer {
int IComparer.Compare( Object x, Object y ) {
return( (new CaseInsensitiveComparer()).Compare( y, x ) );
}
}
public static void Main() {
ArrayList myAL = new ArrayList();
myAL.Add( "A" );
myAL.Add( "B" );
myAL.Add( "C" );
myAL.Add( "1" );
myAL.Add( "2" );
myAL.Add( "3" );
myAL.Add( "X" );
myAL.Add( "Y" );
myAL.Add( "Z" );
IComparer myComparer = new myReverserClass();
myAL.Sort( myComparer );
foreach ( Object obj in myAL )
Console.WriteLine(obj );
}
}
The code above generates the following result.
