Security update control across threads

write down a Safecall method in the extension method class in your project:usingSystem;usingSystem.Windows.Forms;namespacewindowsformsapplication1{ Public Static classExtensions { Public Static voidSafecall ( ThisControl CTRL, Action callback) {            if(CTRL. invokerequired) Ctrl.            Invoke (callback); Elsecallback (); }} It just takes the code you want to protect as a callback. Then any place that needs to protect some code can be called:usingSystem;usingSystem.Threading;usingSystem.Windows.Forms;namespacewindowsformsapplication1{ Public Partial classForm1:form { PublicForm1 () {InitializeComponent (); }         Private voidForm1_Load (Objectsender, EventArgs e) {ThreadPool.QueueUserWorkItem (H=            {                 for(vari =0; I <10000000; i++) {Label1. Safecall (()={Label1. Text=i.tostring ();                    }); Thread.Sleep ( -);        }            }); }     }}

of course, using LAMDA is one of my "bad problems". You can actually use the traditional anonymous delegate notation:usingSystem;usingSystem.Threading;usingSystem.Windows.Forms;namespacewindowsformsapplication1{ Public Partial classForm1:form { PublicForm1 () {InitializeComponent (); }         Private voidForm1_Load (Objectsender, EventArgs e) {ThreadPool.QueueUserWorkItem (H=            {                 for(vari =0; I <10000000; i++) {Label1. Safecall (Delegate() {Label1. Text=i.tostring ();                    }); Thread.Sleep ( -);        }            }); }     }}

Security update control across threads