Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

IComparer or IComparable interfaces...

Posted on 2004-10-15
2
980 Views
Last Modified: 2009-07-29
I don't understand when one should implement the IComparer or IComparable interface or really the difference between the two? They both return int's based on whether one is greater, equal or less than the other.
0
Comment
Question by:dotnet22
2 Comments
 
LVL 48

Accepted Solution

by:
Mikal613 earned 400 total points
ID: 12321633
0
 
LVL 4

Assisted Solution

by:Farshid-Zaker
Farshid-Zaker earned 100 total points
ID: 12321685
hi dotnet22,
When you implement IComparable interface in a class, objects of it got the ability to compare themselves to any other object of the same class. That is a generic interface:
myObject.CompareTo(otherObject);

Classes that have implemented IComparer, just can compare any two other objects and return the result. They are not stateful objects and just COMPARE! IComparer objects are mostly used in Array.Sort or Array.BinarySearch methods as the last parameter.
There are 3 classes which has implemented it and ready for use in dotnet framework, the most famous one is Comparer. The two others are CaseInsensitiveComparer and KeysConverter.

Thanks,
Farshid
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Summary Displaying images in RichTextBox is a common requirement with limited solutions available. Pasting through clipboard or embedding into RTF content only support static images.  This article describes how to insert Windows control objects int…
A long time ago (May 2011), I have written an article showing you how to create a DLL using Visual Studio 2005 to be hosted in SQL Server 2005. That was valid at that time and it is still valid if you are still using these versions. You can still re…
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…

861 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question