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.
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();
You should be using a Task for that purpose.
If you can use any method of threading, try BackgroundWorker:
BackgroundWorker bw = new BackgroundWorker();
public Form1()
{
InitializeComponent();
bw.DoWork += bw_DoWork;
bw.RunWorkerCompleted += bw_RunWorkerCompleted;
bw.RunWorkerAsync("MyName");
}
void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
Text = (string)e.Result;
}
void bw_DoWork(object sender, DoWorkEventArgs e)
{
string name = (string)e.Argument;
e.Result = "Hello ," + name;
}
