?
Solved

Optional Arguments

Posted on 2004-08-17
3
Medium Priority
?
204 Views
Last Modified: 2010-04-17
Dear Friends,
I am new to C#.Can anybody tell me how to pass optional arguments while calling a function in C#.Also, what is the use of "param"  keyword?
0
Comment
Question by:Dharmen-Patel
[X]
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
3 Comments
 

Accepted Solution

by:
mjdmjd earned 200 total points
ID: 11819529
The param thing is for your comments - see this on the MS website

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

As for the optional arguments, you can either overload the method i.e.

public void foo (string mystr)
{
}

public void foo (string mystr, bool mybool)
{
}

or use the params keyword (which is maybe what you meant instead of param in your origional question)

   public static void UseParams(params int[] list)
   {
      for ( int i = 0 ; i < list.Length ; i++ )
         Console.WriteLine(list[i]);
      Console.WriteLine();
   }

You can then call this function with any number of integers like this

useparams(1)
useparamts(1,2,3,4,5,6)
etc ...

only thing to watch out for is that the params keyword has to come after any other paramaters.

hope this helps
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

If you’re thinking to yourself “That description sounds a lot like two people doing the work that one could accomplish,” you’re not alone.
What do responsible coders do? They don't take detrimental shortcuts. They do take reasonable security precautions, create important automation, implement sufficient logging, fix things they break, and care about users.
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
Six Sigma Control Plans

771 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