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copied!<p>You should never use suspend/resume, be it in Java or C#, because only your threads know when it's safe to stop or suspend.</p> <p>Instead use <strong>synchronization primitives</strong> like <strong>events</strong> to control the execution of a thread.</p> <p>Here is a little sample using <strong>WinForms</strong> (so you just need to add a reference to <strong>System.Windows.Forms</strong>):</p> <pre><code>using System.Threading; using System.Windows.Forms; using System; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Label label = new Label { Dock = DockStyle.Top }; Button button = new Button { Text = "||", Dock = DockStyle.Bottom }; Form form = new Form(); form.Controls.Add(label); form.Controls.Add(button); bool @continue = true; bool isRunning = true; ManualResetEvent run = new ManualResetEvent(true); int i = 0; form.Load += (s, a) => { ThreadPool.QueueUserWorkItem(o => { while (@continue) { run.WaitOne(); label.Invoke((Action)(() => { label.Text = i++.ToString(); })); Thread.Sleep(1000); } }); }; button.Click += (s, a) => { isRunning = !isRunning; if (isRunning) run.Set(); else run.Reset(); button.Text = isRunning ? "||" : ">>"; }; form.Disposed += (s, a) => @continue = false; Application.Run(form); } } } </code></pre> <p>So the thread that counts (note that this is not accurate at all if you want to count seconds) checks each time if it must continue or wait using "<strong>WaitOne</strong>".</p> <p>The UI thread controls this by activating/deactivating the <strong>event</strong>: when you click on the button the event state is toggled.</p>

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