Solved

Need help with ParameterizedThreadStart delegate

Posted on 2007-11-18
6
1,003 Views
Last Modified: 2012-08-14
I have defined two arrays that I need to pass to a thread:

            Service.isbnAndPrices[] initialISBNRetValue = new Service.isbnAndPrices[100];
            Service.isbnAndPrices[] isbnRetValue = new Service.isbnAndPrices[totalRecordCount];

I have defined the call to start the thread as:

                    ParameterizedThreadStart pts = new ParameterizedThreadStart(getISBNPricingData);
                    Thread t = new Thread(pts);
                    ArrayList al = new ArrayList();
                    al.Add(initialISBNRetValue);
                    al.Add(isbnRetValue);
                    t.Start(al);

and finally, the actual method that I want to run as a separate thread:

        private void getISBNPricingData(object data)
        {
            Cursor.Current = Cursors.AppStarting;
            Service.isbnAndPrices[] initialRetValue = (ArrayList)data[0];
            Service.isbnAndPrices[] retValue = (ArrayList)data[1];


The problem is the last two lines above; I am getting an error stating: Cannot apply indexing with [] to an expression of type object.

How do I fix this?

0
Comment
Question by:rmmarsh
  • 3
  • 3
6 Comments
 
LVL 55

Accepted Solution

by:
Jaime Olivares earned 500 total points
ID: 20308645
try with:

private void getISBNPricingData(object data)
        {
            Cursor.Current = Cursors.AppStarting;
            ArrayList array = (ArrayList)data;
            Service.isbnAndPrices[] initialRetValue = (Service.isbnAndPrices[])array[0];
            Service.isbnAndPrices[] retValue = (Service.isbnAndPrices[])array[1];

0
 

Author Comment

by:rmmarsh
ID: 20308678
Unbelievable!  Thank you soooo much!  Sometimes I just can't figure it out...

One more question:  what is the proper way to stop this thread so I don't have memory leaks?
0
 
LVL 55

Expert Comment

by:Jaime Olivares
ID: 20308699
Do you have any specific requirement with the thread stuff?
Usually you just have to return from your thread function.
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Author Comment

by:rmmarsh
ID: 20308712
Well, that would work also... but I have a "stop" button to stop the process... do I just use "suspend"?
0
 
LVL 55

Expert Comment

by:Jaime Olivares
ID: 20308739
use Abort().
Have a look for this simple tutorial about .net threads:
http://www.codeproject.com/cs/threads/csharp.asp
0
 

Author Closing Comment

by:rmmarsh
ID: 31409822
Thanks again...
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Introduction This article series is supposed to shed some light on the use of IDisposable and objects that inherit from it. In essence, a more apt title for this article would be: using (IDisposable) {}. I’m just not sure how many people would ge…
Summary: Persistence is the capability of an application to store the state of objects and recover it when necessary. This article compares the two common types of serialization in aspects of data access, readability, and runtime cost. A ready-to…
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
This Micro Tutorial will give you a basic overview how to record your screen with Microsoft Expression Encoder. This program is still free and open for the public to download. This will be demonstrated using Microsoft Expression Encoder 4.

867 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

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now