How can call by reference in a thread function

Question

0.00/5 (No votes)

See more:

Hi How can call by reference in a thread function
for example in follow code I need a string variable that Change its value into thread and then I use the button1_Click function

struct Customer
{
    public int Id { get; set; }
}
    public  void thrad(object parm)
    {
        Customer customer = (Customer)parm;


    }
    private void button1_Click(object sender, EventArgs e)
    {

        Customer customer1 = new Customer() { Id = 1 };
        Thread t1 = new Thread(new ParameterizedThreadStart(Showcustomer));
        Thread barberT = new Thread(barber);
        t1.Start(customer1);



    }

Posted 14-Apr-11 9:02am

esmailian

Add a Solution

2 solutions

Solution 1

I don't think you need to worry about it, but you could try using a static variable...

C#

public class MyClass
{
    struct Customer
    {
        int id;
    }

    private static Customer cust = null;

    private buttonClick(...)
    {
        cust = new Customer();
        ...
    }
}

Posted 14-Apr-11 9:03am

#realJSOP

Updated 14-Apr-11 9:07am

v2

Comments

esmailian 14-Apr-11 15:10pm

When I'm defining a static variable inside the string where I am going to tell the problem is
I have this variable to a string to a label like. Each thread was carried Vqt label is changed so much.

Sergey Alexandrovich Kryukov 14-Apr-11 16:56pm

There is a comprehensive solution!
Please see my Answer.
--SA

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Accepted Answer · 2011-04-14T10:56:00

Solution 2

Don't use parametrized thread!
My thread wrapper solves the problem completely:

How to pass ref parameter to the thread[^].

I provide quite detailed explanation in my reference.

—SA

Posted 14-Apr-11 10:56am

Sergey Alexandrovich Kryukov

Comments

Espen Harlinn 14-Apr-11 17:25pm

Good effort, 5ed!

Sergey Alexandrovich Kryukov 14-Apr-11 19:10pm

Thank you, Espen.
I think parametrized thread which requires type case is one of the .NET nonsenses. Thanks goodness the work around is so clean and straightforward.
--SA