public partial class Form1 : Form { CancellationTokenSource cts = new CancellationTokenSource(); public Form1() { InitializeComponent(); } private voi ...
public partial class Form1 : Form { CancellationTokenSource cts = new CancellationTokenSource(); public Form1() { InitializeComponent(); } private void StartClick(object sender, EventArgs e) { Task testTask = Task.Run(() => { while (!cts.IsCancellationRequested) { string str = $"{DateTime.Now.ToString("yyyyMMddHHmmssffff")},{Guid.NewGuid().ToString()}"; BeginInvoke(new Action(() => { listBox1.Items.Add(str); })); Thread.Sleep(500); } }, cts.Token); } private void CancelClick(object sender, EventArgs e) { cts.Cancel(); string str = "Task cancelled"; listBox1.Items.Add(str); } }
public partial class Form1 : Form { CancellationTokenSource cts = new CancellationTokenSource(); List<string> lbList = new List<string>(); public Form1() { InitializeComponent(); listBox1.DataSource = lbList; } private void StartClick(object sender, EventArgs e) { Task testTask = Task.Run(() => { while (!cts.IsCancellationRequested) { string str = $"{DateTime.Now.ToString("yyyyMMddHHmmssffff")},{Guid.NewGuid().ToString()}"; BeginInvoke(new Action(() => { lbList.Add(str); listBox1.DataSource = null; listBox1.DataSource = lbList; })); Thread.Sleep(500); } }, cts.Token); } private void CancelClick(object sender, EventArgs e) { cts.Cancel(); string str = "Task cancelled"; BeginInvoke(new Action(() => { lbList.Add(str); listBox1.DataSource = null; listBox1.DataSource = lbList; })); } }
public partial class Form1 : Form { CancellationTokenSource cts = new CancellationTokenSource(); List<string> lbList = new List<string>(); public Form1() { InitializeComponent(); listBox1.DataSource = lbList; } private void StartClick(object sender, EventArgs e) { Task testTask = Task.Run(() => { while (!cts.IsCancellationRequested) { AddContentToLBx(); } }, cts.Token); } int i = 0; private void AddContentToLBx() { for(i=0;i<10000;i++) { string str = $"i={i},{DateTime.Now.ToString("yyyyMMddHHmmssffff")},{Guid.NewGuid().ToString()}"; BeginInvoke(new Action(() => { lbList.Add(str); listBox1.DataSource = null; listBox1.DataSource = lbList; })); Thread.Sleep(500); if (cts.IsCancellationRequested) { break; } } } private void CancelClick(object sender, EventArgs e) { cts.Cancel(); string str = $"i={i},Task cancelled"; BeginInvoke(new Action(() => { lbList.Add(str); listBox1.DataSource = null; listBox1.DataSource = lbList; })); } }
int i = 0; List<string> lbList = new List<string>(); private bool IsCancelled { get; set; } public Form1() { InitializeComponent(); listBox1.DataSource = lbList; } //Start or restart private void StartClick(object sender, EventArgs e) { IsCancelled = false; if(!IsCancelled) { Task testTask = Task.Run(() => { AddContentToLBx(); }); } } private void AddContentToLBx() { while (i < 10000) { if (!IsCancelled) { string str = $"i={i},{DateTime.Now.ToString("yyyyMMddHHmmssffff")},{Guid.NewGuid().ToString()}"; BeginInvoke(new Action(() => { lbList.Add(str); listBox1.DataSource = null; listBox1.DataSource = lbList; })); Thread.Sleep(500); } else { break; } i++; } } private void CancelClick(object sender, EventArgs e) { IsCancelled = true; string str = $"i={i},Task cancelled"; BeginInvoke(new Action(() => { lbList.Add(str); listBox1.DataSource = null; listBox1.DataSource = lbList; })); }