In asp.net, C # obtains the thread number instance program.

Sometimes we need to determine if the application has multiple threads enabled, at which point it can be judged by getting the thread number (the Thread.Name property value is often null and cannot be used for judgment):

The code is as follows

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Using System; Using System.Threading; Namespace ConsoleApplication1 { public class Program { static public void Main (string[] args) { Console.WriteLine ("Mainthreadid:" + Thread.CurrentThread.ManagedThreadId); action<string> test = test; Test. BeginInvoke ("mzwu.com", testcallback, test); Console.readkey (); } static void Test (String str) { Console.WriteLine ("Subthreadid:" + Thread.CurrentThread.ManagedThreadId); } static void Testcallback (IAsyncResult ar) { action<string> handler = (action<string>) ar. asyncstate; Handler. EndInvoke (AR); } } }