This article describes the usage of Arraylist sort function in C#. Share it for your reference. The details are as follows:
There are several commonly used overloads for the sort function of ArrayList:
1. No parameters
2. With one parameter
public virtual void Sort( IComparer comparer )
parameter
comparer
type:
The IComparer implementation to be used when comparing elements.
- or -
The null reference (Nothing in Visual Basic) will use the IComparable implementation of each meta.
Example:
using System;
using ;
public class SamplesArrayList {
public class myReverserClass : IComparer {
// Calls with the parameters reversed.
int ( Object x, Object y ) {
return( (new CaseInsensitiveComparer()).Compare( y, x ) );
}
}
public static void Main() {
// Creates and initializes a new ArrayList.
ArrayList myAL = new ArrayList();
( "The" );
( "quick" );
( "brown" );
( "fox" );
( "jumps" );
( "over" );
( "the" );
( "lazy" );
( "dog" );
// Displays the values of the ArrayList.
( "The ArrayList initially contains the following values:" );
PrintIndexAndValues( myAL );
// Sorts the values of the ArrayList using the default comparer.
();
( "After sorting with the default comparer:" );
PrintIndexAndValues( myAL );
// Sorts the values of the ArrayList using the reverse case-insensitive comparer.
IComparer myComparer = new myReverserClass();
( myComparer );
( "After sorting with the reverse case-insensitive comparer:" );
PrintIndexAndValues( myAL );
}
public static void PrintIndexAndValues( IEnumerable myList ) {
int i = 0;
foreach ( Object obj in myList )
( "\t[{0}]:\t{1}", i++, obj );
();
}
}
/*
This code produces the following output.
The ArrayList initially contains the following values:
[0]: The
[1]: quick
[2]: brown
[3]: fox
[4]: jumps
[5]: over
[6]: the
[7]: lazy
[8]: dog
After sorting with the default comparer:
[0]: brown
[1]: dog
[2]: fox
[3]: jumps
[4]: lazy
[5]: over
[6]: quick
[7]: the
[8]: The
After sorting with the reverse case-insensitive comparer:
[0]: the
[1]: The
[2]: quick
[3]: over
[4]: lazy
[5]: jumps
[6]: fox
[7]: dog
[8]: brown
*/
I hope this article will be helpful to everyone's C# programming.