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How do I delete an element from an array

Posted on 2009-05-17
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Last Modified: 2013-11-27
I have 2 arrays, FileList1 and FileList2. As I compare the 2, I want to delete any entries in FileList1 that are also in FileList2.

I found an answer at http://www.experts-exchange.com/Programming/Languages/.NET/Visual_Basic.NET/Q_23721653.html but I get the error "RemoveAt is not a member of System.Array"

It seems to have worked for a previous questioner so why not for me?

I am using Visual Studio Express 2008, (Visual Basic).
Dim FileList1(count1) As String ' Count1 is determined by some previous code
            Dim FileList2(count2) As String ' Count2 is determined by some previous code
 
            ' Code to populate the arrays
 
           If FileList1.Count > FileList2.Count Then
                For i As Integer = FileList1.Count - 1 To 0 Step -1
                    For x As Integer = FileList2.Count - 1 To 0 Step -1
                        If FileList2(x).ToString = FileList1(i).ToString Then
                            FileList1.RemoveAt(i)
                            Exit For 
                        End If
                    Next
                Next
            End If

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Question by:jindalee
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7 Comments
 
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Accepted Solution

by:
Wayne Taylor (webtubbs) earned 2000 total points
ID: 24405894
Consider using an ArrayList instead of Array. Then you can use the RemoveAt method.

Wayne
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LVL 11

Expert Comment

by:srikanthreddyn143
ID: 24406116
As Webtubbs said, Array is not resizable. You have to use arraylist to add or remove items dynamically.
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LVL 22

Expert Comment

by:p_davis
ID: 24423639
the asker in the pointer actually says that he has 2 arraylists.
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Author Comment

by:jindalee
ID: 24465806
OOPS. So it does :S
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LVL 11

Expert Comment

by:srikanthreddyn143
ID: 24467090
Mr.jindalee,

the link you provided has used arraylist.I think you are using arrays.Right?
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LVL 1

Author Comment

by:jindalee
ID: 24600854
Haven't forgotten the question - I've been diverted to a higher priority task and haven't had the chance to try the suggestions. Will get back to it soon.
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Author Closing Comment

by:jindalee
ID: 31582344
As soon as I changed from Array to ArrayList I was able to twek the code to do what I needed.

Thank you
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