C # multithreaded Programming instance-code analysis of thread-to-form interaction

C # Multithreaded Programming instance threads interact with forms

Code:

    Public partial class Form1:form {//Declare thread array thread[] workthreads = new THREAD[10];        Public Form1 () {InitializeComponent ();        }//This delegate allows an asynchronous call to add Item delegate void Additemcallback (string text) to the listbox;        This method demonstrates how thread-safe mode is lowered with a control on a Windows Form. private void AddItem (string text) {if (this.listBox1.InvokeRequired) {Addite                Mcallback d = new Additemcallback (AddItem); This.            Invoke (d, new object[] {text});            } else {this.listBox1.Items.Add (text); }}//Data acquisition method public void Dataget () {while (true) {Addit                EM ("OK");            Thread.Sleep (1000);        }//If this method exits, then the thread exits}///<summary>///boot thread//</summary> <param name= "Sender" ></param>//<param Name= "E" ></param> private void Button1_Click (object sender, EventArgs e) {//loop Create and start thread                Line for (int i = 0; i < workthreads.length; i++) {if (workthreads[i] = = null)                    {//If the thread does not exist, create workthreads[i] = new Thread (new ThreadStart (Dataget)); Workthreads[i].                    Name = i.ToString (); Workthreads[i].                Start (); } else {//already exists, if not running, start if (Workthreads[i]. ThreadState = = Threadstate.aborted | | Workthreads[i]. ThreadState = = threadstate.stopped) {Workthreads[i] = new Thread (New Threadstar                        T (Dataget)); Workthreads[i].                        Name = i.ToString (); Workthreads[i].                    Start (); }else{Workthreads[i].                    Start ();      }                }      }}///<summary>//Stop thread///</summary>//<param name= "Sender" ></param>//<param name= "E" ></param> private void button2_click (object sender, Eventa                RGS e) {//Loop stop thread execution for (int i = 0; i < workthreads.length; i++) { If the thread exists and the state is not stopped or terminated, then the thread is terminated if (workthreads[i]! = null && workthreads[i]. ThreadState! = threadstate.stopped && workthreads[i]. ThreadState! = threadstate.aborted) {workthreads[i].                Abort (); }            }        }