c# - 跨线程操作在 Windows 窗体中无效

Question

有人能帮我吗我有一个问题我试图通过线程池让这段代码在后台工作但我似乎无法让它工作我不断收到这个错误:

Cross-thread operation not valid: Control 'ListBox3' accessed
from a thread other than the thread it was created on. 

这是我使用的代码:

private void DoWork(object o)
{
    var list = ListBox3;

    var request = createRequest(TxtServer.Text, WebRequestMethods.Ftp.ListDirectory);

    using (var response = (FtpWebResponse)request.GetResponse())
    {
        using (var stream = response.GetResponseStream())
        {
            using (var reader = new StreamReader(stream, true))
            {
                while (!reader.EndOfStream)
                {
                    list.Items.Add(reader.ReadLine());
                    ResultLabel.Text = "Connected";
                }
            }
        }
    }
}

Answer 1

你可以通过这样做访问控制

 Invoke(new Action(() => {Foo.Text="Hi";}));