Solved

Why am I getting an out of rang exception with the following "for loop"?

Posted on 2006-11-02
4
245 Views
Last Modified: 2010-04-16
           int dropDownCount = actionMenu.DropDownItems.Count;
            if(dropDownCount > 6)
            {
                for (int index = 6; index < dropDownCount; index++)
                {
                    actionMenu.DropDownItems.RemoveAt(index);

                }
            }

Thanks.
0
Comment
Question by:lapucca
  • 2
4 Comments
 
LVL 11

Accepted Solution

by:
Expert1701 earned 500 total points
ID: 17864194
If you are trying to remove all but the first six items, try the following code:

  int dropDownCount = actionMenu.DropDownItems.Count;
  for (int index = 6; index < dropDownCount; index++)
    actionMenu.DropDownItems.RemoveAt(6);

Or,

  int dropDownCount = actionMenu.DropDownItems.Count;
  for (int index = (dropDownCount - 1); index >= 6; index--)
    actionMenu.DropDownItems.RemoveAt(index);
0
 
LVL 11

Expert Comment

by:Expert1701
ID: 17864198
Or even,

  while(actionMenu.DropDownItems.Count > 6)
    actionMenu.DropDownItems.RemoveAt(6);
0
 

Author Comment

by:lapucca
ID: 17864199
Nop, I was trying to remove all items after the 6th item.  I got it working now.  You see, the count is changing with each item I remove so it eventually ran out and got the exception error.  Thanks.
0
 
LVL 29

Expert Comment

by:anarki_jimbel
ID: 17864204
I believe the reason is that you alter underlying collection, and therefore alter the count of items.

Try to use 'while' loop:

while(actionMenu.DropDownItems.Count>6){
    actionMenu.DropDownItems.RemoveAt(6);
}
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

Introduction Hi all and welcome to my first article on Experts Exchange. A while ago, someone asked me if i could do some tutorials on object oriented programming. I decided to do them on C#. Now you may ask me, why's that? Well, one of the re…
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
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…

791 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