Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Trying to create new thread when button clicked?

Posted on 2008-10-03
6
Medium Priority
?
827 Views
Last Modified: 2011-10-03
Experts,

I'm trying to run a method in a new thread, once a button is clicked.  Here's my code:

        private void button1_Click(object sender, EventArgs e)
        {
            Thread newThread = new Thread(new ThreadStart(RunLoop(0)));
            newThread.Start();      
        }

I get the error, "Method name expected".

Please help!
0
Comment
Question by:mhouldridge
  • 2
  • 2
6 Comments
 
LVL 13

Accepted Solution

by:
joechina earned 1000 total points
ID: 22634874
0
 
LVL 4

Assisted Solution

by:alaran
alaran earned 1000 total points
ID: 22634893
ThreadStart is a delegate, so you need to just pass the name of the method you want invoked. The method must match the signature og the delegate.

This means that you must do like so:
Thread newThread = new Thread(new ThreadStart(RunLoop));
newThread.Start();

Note that the ThreadStart delegate returns void and has no parameters.

To pass parameters you need to pass a ParameterizedThreadStart, which returns void and takes one parameter of type object:
Thread newThread = new Thread(new ParameterizedThreadStart(RunLoop));
newThread.Start(myParameterObject);  

Your threaded method should then look like so:
public static void RunLoop(object parameters) {}

The object you pass to the newThread.Start() method will be the one you get in your RunLoop method.
0
 
LVL 13

Expert Comment

by:joechina
ID: 22634895
private void button1_Click(object sender, EventArgs e)
        {
            Thread newThread = new Thread(new ParameterizedThreadStart(RunLoop));
            newThread.Start(0);      
        }
0
 
LVL 4

Expert Comment

by:alaran
ID: 22865171
As both joechina and myself gave the same answer at pretty much the same time, I think it would be fair to split the points.
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say 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

Introduction Although it is an old technology, serial ports are still being used by many hardware manufacturers. If you develop applications in C#, Microsoft .NET framework has SerialPort class to communicate with the serial ports.  I needed to…
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 course is ideal for IT System Administrators working with VMware vSphere and its associated products in their company infrastructure. This course teaches you how to install and maintain this virtualization technology to store data, prevent vuln…
Please read the paragraph below before following the instructions in the video — there are important caveats in the paragraph that I did not mention in the video. If your PaperPort 12 or PaperPort 14 is failing to start, or crashing, or hanging, …
Suggested Courses

927 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