Re: Newbie - delete item from collection

One thing to try is to work from the end of the collection. When you delete items from some structures, the indexes above the deleted item are reduced to keep it from having gaps. So:

         for (int idx = _someList.Count - 1; idx >= 0; idx--)
         {
            if (_someList[idx].ErrorCode > 90)
               _someList.RemoveAt(idx);
         }
--Jekke

-----Original Message-----
From: Discussion of advanced .NET topics. [mailto:[email protected]] On Behalf Of Lars Zeb
Sent: Monday, November 17, 2008 3:27 PM
To: [email protected]
Subject: [ADVANCED-DOTNET] Newbie - delete item from collection

I have defined a and populated a generic list with 3rd party software.
After it is created, I need to remove all items with an errorcode
value > 90.

Is this supposed to work?

         for (int idx = 0; idx < _someList.Count; idx++)
         {
            if (_someList[idx].ErrorCode > 90)
               _someList.RemoveAt(idx);
         }

After I "removed" items with ErrorCode> 90, the list still contained some items with ErrorCodes over 90.

Or should I create a new list and add items to it from the old list with ErrorCodes <=90?

Thanks, Lars

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