How to change attributes of an ArrayList?

[mb]

If an ArrayList has an object named "myTest" which has properties ".Name"
and ".Number". now how do I change the .Name of the object in the
arraylist?

I have had bad experiences so far with ArrayLists. It seem like a lot of
extra work to get value out of the ArrayList. Maybe I am doing it wrong.

Thanks for the help.

 

[Stefan Holdermans]

MB,

MB> If an ArrayList has an object named "myTest" which has properties
MB> ".Name" and ".Number". now how do I change the .Name of the
MB> object in the arraylist?

using System;
using System.Collections;

class Test {
public string Name;
public int Number;

public static void Main() {
Test myTest = new Test() ;
ArrayList myList = new ArrayList();

myList.Add(myTest);

((MyTest) myList[0]).Name = "MB";
((MyTest) myList[0]).Number = 7 ;

Console.Write(myTest.Name) ;
Console.Write(myTest.Number);
}
}

HTH,

Stefan

 

[mb]

I guess that will work. It's funny, none of the books I have looked at show
how to do this. In my experience so far, ArrayLists are cumbersome and
awkward. Are they supposed to be like this?

 

[Scott Allen]

On one hand an ArrayList is flexible, because you can stuff any type
of object into an arraylist for storage. It's getting the object back
out and manipulating the object as a specific type that is indeed
awkward. Some people will try to get rid of the awkwardness by
creating thier own strongly typed container classes (i.e. a class that
would only store Test instances, and only return Test instances), but
this involves additional code. Generics, in .NET 2.0, will make the
process much easier:
http://msdn.microsoft.com/msdnmag/issues/03/09/NET/

--
Scott
http://www.OdeToCode.com/

I guess that will work. It's funny, none of the books I have looked at show
how to do this. In my experience so far, ArrayLists are cumbersome and
awkward. Are they supposed to be like this?

MB,

MB> If an ArrayList has an object named "myTest" which has properties
MB> ".Name" and ".Number". now how do I change the .Name of the
MB> object in the arraylist?

using System;
using System.Collections;

class Test {
public string Name;
public int Number;

public static void Main() {
Test myTest = new Test() ;
ArrayList myList = new ArrayList();

myList.Add(myTest);

((MyTest) myList[0]).Name = "MB";
((MyTest) myList[0]).Number = 7 ;

Console.Write(myTest.Name) ;
Console.Write(myTest.Number);
}
}

HTH,

Stefan