No Overload For 'void' Matches Delegate 'ThreadStart'

Question

I want to run function with void as return type in new thread, but it always shows this error:

No overload for 'myVoid' matches delegate 'ThreadStart'

and my code :

Thread t = new Thread(new ThreadStart(myVoid)); // <-- Error Shows Here 
t.Start("Test","Test2");

// And The Void :
void myVoid(string text, string text2)
{
    Console.WriteLine(text + text2);
}

How I fix it? What is wrong?

Your method needs to be parameter-less. This may help... http://stackoverflow.com/questions/3360555/how-to-pass-parameters-to-threadstart-method-in-thread — Brian P, Dec 28 '15 at 18:17
Signature of ThreadStart `public delegate void ThreadStart()` says that it expects a parameterless method. — Marshal, Dec 28 '15 at 18:18
Possible duplicate of [C# Threads -ThreadStart Delegate](http://stackoverflow.com/questions/1782210/c-sharp-threads-threadstart-delegate) — Jesse C. Slicer, Dec 28 '15 at 18:20

score 4 · Accepted Answer · answered Dec 28 '15 at 18:18

4

ThreadStart delegate expects a delegate that takes no parameters. If you would like to use myVoid in a thread, you need to provide a way to make a match between myVoid and a no-argument delegate.

One way of doing it is by providing a lambda, like this:

Thread t = new Thread(new ThreadStart(() => myVoid("Test", "Test2")));
t.Start();

answered Dec 28 '15 at 18:18

Sergey Kalinichenko

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Can be further simplified to: `Thread t = new Thread(() => myVoid("Test", "Test2"));` – sstan Dec 28 '15 at 18:20
1

Thankyou Very Much ! It Works – Al00X Dec 28 '15 at 18:21

score 1 · Answer 2 · answered Dec 28 '15 at 18:19

1

The ThreadStart delegate you are using does not define any arguments.

This means your method myVoid which has 2 string arguments does not match the delegate.

answered Dec 28 '15 at 18:19

Dietz

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No Overload For 'void' Matches Delegate 'ThreadStart'

2 Answers2