?
Solved

How do I copy an array into another?

Posted on 2008-06-20
8
Medium Priority
?
768 Views
Last Modified: 2012-06-22
Hello,

I want to do something like this: ArrayCopy = Array

Without the original Array changing when I change the CopyArray.

Please help.

Thanks in advance.

0
Comment
Question by:richardhaeger
[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
  • 2
  • 2
  • 2
  • +2
8 Comments
 
LVL 48

Assisted Solution

by:jpaulino
jpaulino earned 600 total points
ID: 21833899
0
 
LVL 10

Accepted Solution

by:
gangwisch earned 900 total points
ID: 21833979
Dim ArrayOfInts() As Integer = {1,2,3,4,5,6,7,8,9}
Dim My2ndArrayOfInts() as Integer = ArrayOfInts.Clone()
0
 
LVL 55

Expert Comment

by:Jaime Olivares
ID: 21833995
use the Clone() method:

arr2 = arr1.Clone()

considering arr1 and arr2 are defined as arrays
0
Technology Partners: 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!

 
LVL 55

Expert Comment

by:Jaime Olivares
ID: 21834003
Oops, too late.
0
 
LVL 19

Expert Comment

by:Stephen Manderson
ID: 21834008
Use the array.Clone() method

Regards
Steve
0
 
LVL 19

Expert Comment

by:Stephen Manderson
ID: 21834010
Crap me too :D
0
 

Author Closing Comment

by:richardhaeger
ID: 31469283
Both solutions worked fine, I gave Paulino less points because he did not include an example. The clone method does a shallow copy. Does CopyTo do a deep copy? I guess so, am I correct?
0
 
LVL 48

Expert Comment

by:jpaulino
ID: 21835189
The example was in the MSDN link. I just didn't found usefull to copy/paste. :)

The CopyTo allows to copy to a new array and gives you the possibility to select the start index. Ex from MSDN adapted:

        Dim dinosaurs As New List(Of String)

        dinosaurs.Add("Tyrannosaurus")
        dinosaurs.Add("Amargasaurus")
        dinosaurs.Add("Mamenchisaurus")
        dinosaurs.Add("Brachiosaurus")
        dinosaurs.Add("Compsognathus")

        ' Shows the current array List(Of String)
        Debug.WriteLine(vbLf & "Contents of the dinosaurs :")
        For Each dinosaur As String In dinosaurs
            Debug.WriteLine(dinosaur)
        Next

        ' Declare an array with 15 elements (0 through 14).
        Dim array(14) As String
 
         ' Adds some text to the first position
        array(0) = "OldItem"

        ' Copy the array dinosaurs to the array() starting on 1
        dinosaurs.CopyTo(array, 1)

        Debug.WriteLine(vbLf & "Contents of the array:")
        For Each dinosaur As String In array
            Debug.WriteLine(dinosaur)
        Next


And the results:

Contents of the dinosaurs :
Tyrannosaurus
Amargasaurus
Mamenchisaurus
Brachiosaurus
Compsognathus

Contents of the array:
OldItem
Tyrannosaurus
Amargasaurus
Mamenchisaurus
Brachiosaurus
Compsognathus

0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying 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

Article by: jpaulino
XML Literals are a great way to handle XML files and the community doesn’t use it as much as it should.  An XML Literal is like a String (http://msdn.microsoft.com/en-us/library/system.string.aspx) Literal, only instead of starting and ending with w…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
In this video you will find out how to export Office 365 mailboxes using the built in eDiscovery tool. Bear in mind that although this method might be useful in some cases, using PST files as Office 365 backup is troublesome in a long run (more on t…

762 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