ArrayList property comes out as null

Posted on 2009-04-02
Last Modified: 2012-08-14
I have a class: Basket.cs and i created a property for it like this:

public ArrayList basketPayments

In my page1.aspx, I want to populate this arraylist so I did this:

 Basket.PaymentMethod = card;

but the second like Basket.basketPayments.Add(card);  gives me object null error. How can I use it??
Question by:Camillia
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
LVL 16

Assisted Solution

burakiewicz earned 200 total points
ID: 24054578
try this
Basket.PaymentMethod = card;
 Basket.basketPayments=new ArrayList();
LVL 16

Expert Comment

ID: 24054584
or on the constructor for your basket class add
basketPayments=new ArrayList();
LVL 22

Accepted Solution

JimBrandley earned 300 total points
ID: 24054593
It has not been initialized. So, your first get returns the null.

In the class that contains this, add a member:
private ArrayList mBasketPayments = null;

Then change the getter and setter as:

public ArrayList basketPayments
           if (mBasketPayments == null)
                mBasketPayments = new ArratList(10);
           return mBasketPayments;
     set { mBasketPayments = value; }


Author Comment

ID: 24055414
thanks, let me try.

Featured Post

Salesforce Has Never Been Easier

Improve and reinforce salesforce training & adoption using WalkMe's digital adoption platform. Start saving on costly employee training by creating fast intuitive Walk-Thrus for Salesforce. Claim your Free Account Now

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Just a quick little trick I learned recently.  Now that I'm using jQuery with abandon in my applications, I have grown tired of the following syntax:      (CODE) I suppose it just offends my sense of decency to put inline VBScript on a…
In an ASP.NET application, I faced some technical problems. In this article, I list them out and show the solutions that I found.  I hope it will be useful. Problem: After closing a pop-up window, the parent page should be refreshed automaticall…
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor ( Top Charts is a view in which you can set seve…

695 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