C# thread method return a value?

c++multithreadingreturnvoid

Possible Duplicate:
Access return value from Thread.Start()'s delegate function

public string sayHello(string name)
{
    return "Hello ,"+ name;
}

How can i use this method in Thread?

That ThreadStart method just accept void methods.

I'm waiting your helps.
Thank you.

Best Solution

Not only does ThreadStart expect void methods, it also expect them not to take any arguments! You can wrap it in a lambda, an anonymous delegate, or a named static function.

Here is one way of doing it:

string res = null;
Thread newThread = new Thread(() => {res = sayHello("world!");});
newThread.Start();
newThread.Join(1000);
Console.Writeline(res);

Here is another syntax:

Thread newThread = new Thread(delegate() {sayHello("world!");});
newThread.Start();

The third syntax (with a named function) is the most boring:

// Define a "wrapper" function
static void WrapSayHello() {
    sayHello("world!);
}

// Call it from some other place
Thread newThread = new Thread(WrapSayHello);
newThread.Start();